Ooooo, I think the bullion ones would be pretty easy to do with frosting:
http://tenar72.files.wordpress.com/2007/07/bullion-tast1-vw.jpg

I've done some borders with both the star tip and the round tip, just a continous spiralling motion, kind of reminds me of that. I had another woman suggest maybe candlewicking next

I'm glad I asked about the peanut butter amount! I'm sure it wouldn't taste right without it. Thanks for your recipe and for sharing your ideas about embroidery. It's a great idea- I'll have to dig out my old stitching books to get some ideas. I think it would look great on cookies too!

Thank you so much for the recipe Serious_Cakes.I tried it yesterday LOVED it and I am not a big fan of peanut butter.But this was so yummy.I made chcocolate cake filled with dark chcocolate ganach and covered it with your icicng it was soooooooo good .I invited few friends over and we all finished the cake .
Thank you
Zubia

Wow that's a pretty cake! I'm so glad you liked it! Thank you for letting me know how it turned out

zubia. Thats a beautiful cake !

Thanks SeriousCakes!
I've just spent ages watching all your vidoes - they're gr8!!
totally lost track of time...................

thank you ,you guys are too kind