I am helping make a spongebob tomorrow and have never made one. Anyone have suggestions or pics? We are layering 2 sheetcakes to form the body and will scoop small indentions for the sponge look.

Welcome to Cake Central.

Keep on asking questions and do a lot of searches you will learn a lot.

click on this link to see a bunch of Spongebob cakes:
http://www.cakecentral.com/modules.php?name=gallery&meta=search&type=full&search=spongebob

I did a search under the search folder, the first list came up in the pictures and then I clicked on the "see more pictures" and got to this page.

I hope this helps. You might want to reserve a bit of cake for the arms and legs like in these picture:
I am guessing about 1 inch or so of the cake on each layer and you would have plenty for the legs, arms and feet.

http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=8744

http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=6932

Good Luck.