Just last month food network had a foodnetwork challenge "Dora Cakes" . You may be able to find pictures online. www.foodnetwork.com
The cakes are pretty amazing even if you don't plan on doing anything that spectacular maybe you can get some ideas. If you are looking for something simple wilton has a dora cake pan.
I have seen Dora Cake pans - http://www.wilton.com/store/site/product.cfm?sku=2105-6300
They usually come with instructions for icing it! HTH
I do birthday cakes for a local social service agency that provides them for kids living in various homeless and domestic violence shelters, and I have had SO many requests for Dora cakes!!! I have done the Wilton cake pan, FBCT, etc. My favorite was a little molded Dora on top of a petal cake.
But I've never tried a carved Dora (obviously not very practically for what I do!) I sure hope you'll post a photo of the cake when you figure it out. I would love to see it!
She isn't too detailed so if you pulled Spongebob off (looks amazing!) which you did you will be able to do Dora.
I would just put down a few rectangles and get a template and carve around her. Then use the scraps to bulk her head and arms and legs out.
Or maybe you could do cake body and head and then fondant arms and legs etc?
Sorry thats not much help but tracing around a template then bulking her out to her basic shape will be an easy start.
Well I did a cake back in November for my daughter it was a dor a and diego. I focussed more on the scene than actually on Dora. My daughter (3 yrs old) loved it she started telling me a wholes story that went along with the theme. I tried to add a picture to this but it didn't work for some reason, just click on the link for my cake photos and you can check it out.
I saw this Dora cake a while ago. It's not carved but I think if you showed up with a cake that looked like this, no one would complain 
. http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1784045
Quote by @%username% on %date%
%body%