ok..i need to make a spongebob cake for my son's 3rd bday ( 5th dec!!! )and thought of using butter cream BUT my problem and doubt is..i cant make white fondant!!! since i use marshmallow fondant and here in italy its is very diff. to get white marshmallows..we get those coloured ones 
So i thought of using royal icing for the white part of his eyes !! and maybe some other small parts too..
this is the pic of the spongebob 
http://www.poster.net/spongebob/spongebob-spongebob-squarepants-9962695.jpg
what my question is..
1.how do i make two eyes?
2. is it possible to make it one day before so that i cud just attach it to the finished cake??
3. how long does it take for the royal icing to dry??
pls help
Yes, you could use royal icing for all the white parts of spongebob. Get the picture of spongebob the exact size that you're going to do your cake. Place a piece of baking paper over it and attach it with some sticky tape so it doesn't move around. With medium thick royal icing pipe the outline of the eyes, teeth and shirt onto the paper. With thinner royal icing fill in the shapes and poke it around a bit with a toothpick so it fills in the corners. Allow to dry very well before touching or adding any other colours. Here are a couple of videos that I quickly found that show similar techniques (but on cookies instead of paper):
I hope this helps and/or maybe someone else has a better way or solution?
Royal icing should work fine for the eyes. I suggest using this recipe: http://cakecentral.com/recipes/1983/antonia74-royal-icing I just made this recipe this weekend and it worked wonderfully. I've tried Wilton's royal icing recipe before and it went horribly - It just wouldn't dry. And I've heard alot of people on here say they use this recipe. Mine dried in about an hour, and making them the day before is definetely the way to go. Makes it much easier, and then you know they are very well dried. You can make the eyes by simply tracing something you've printed out. Put a piece of parchement paper over the paper that has your image is on. After you've let it dry you just remove it from the paper. Hope this helped.
Hi candyCU and tab_stout
Thank you so much for replying..now am much clearer about the royal icing..
candyCu - thanx again for those videos, i had gone through them on youtube
tab_stout - guess i cant make the recipe u had stated 'cos i dont find cream of tartar & meringue powder that easily in italy..but very nice of you to have adviced me
OK..now the eyes will be ok, jut one more curiosity for the eyes: could I spread the white royal icing and then on top another blue circle and again smaller circle of black? like the eyes of the picture ??
am so sorry if am asking too much, am a newbie to the cake decorating.
Sorry you can't find cream of tartar & meringue there. I've thought about to italy..sounds wonderful there, but that would be difficult not finding the same things you can here. And don't worry about asking to many questions, that's what this website is for - I have asked my share of questions on here as well, as I am just a newbie too. I just have used royal icing before. To answer your question, yes you can add the other colors on top for the eyes. Just let each layer dry before you add the next color, otherwise the colors will all blend together. I hope your little boy loves his cake. I just made a spongebob cake for my little boy's birthday this year and he was so excited. And just a bit of advice you may want to make an extra eye just incase one breaks or your little boy destroys it, lol - mine is good at that. He at the nose of his spongebob cake before I even got it on the cake, luckily it was fondant so I could just roll out another one. Have fun decorating!
hey tab_stout !!
great to see ur reply again yeah,italy is a nice place and one finds everything except for those like me 
lol just kidding
wow, i cant wait to make the cake ^_^ i hope my kiddo likes it. thank you so much again for your advices and so lovely to hear about ur little one too..he liked the fondant nose ...i cudn't help laughing ..i was just imagining it ...!! such a cutie 
take care and thank u again ..
i just made sponge bob, he was in the gallery, i crumb coated, and marked where i wanted everything, i did it with the 3 star tip, and filled in with single star. on think i wish i would have used a non crusting bc. it was pretty easy, and i think i used 2 batches of bc. i'll try to post a pic. but they loved the cake
hey candyCU,
sure i will definetley post some fotos..I only hope it will turn out good my cakes are pretty good...i mean everyone loves it..its the frosting i am a little scared O.o... i will give it a try...its the end of the world he he thanks again and hv a nice day ...tc
hey all,
i have posted a foto of the spongebob cake..it didnt turn out the way i wanted BUT i am satisfied with what i did for with the few little utensils and colors i had..i mean it is so very time consuming, the worst was my son was not feeling too good..and had to take care of him and then the cake too...!!
I had forgotten to outline the left side of the shirt..but no one noticed it..Thank God everyone liked it and got so many compliments
I found white/pink marshmallows so i used the white part for the fondant!! then used them for the eyes,shirt etc...anyway, tell me what u think and pls dont hesitate to advice me...i need them
thank you to all of u for the advices u gave cheers..
Hey Kausha,
I just had a look at the finished cake, it looks awsome! Turned out pretty well in the end considering you were playing 'nurse Mum' at the same time! I can see a few very minor things with this, buttercream is a tricky medium to get perfect detail and I know you didn't have many colours to work with (please advise me if I'm out of line). Here I go - you didn't outline the bottoms of the eyes in black, his shirt could have been a little brown just by adding a little uncoloured buttercream, the green spots could have maybe been a bit more solid looking and a little more 'khaki' colour just by adding a touch of black or brown? - see now I'm just nitpicking - but you replicated him really, really, really well!!! and your buttercream is beautifully smooth all over.
You did a great job! I'm really glad your son loved it - I'm picturing the little tacker bouncing around saying "spongebob! spongebob! spongebob!" LOL!
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