Okay so I'm trying to do an elmo cake and I'd like to make the Elmo out of RKT. I know this may sound silly but can somebody help with tips on how to make him stay 'put together' if I try to keep him about 7 inches tall or is that too tall? Please help!!

Have you used RKT before? I've used them a few times and have learned that they need to be crunched down really good, like squished all together. I would put all of the elmo pieces together using melted chocolate or royal icing - but make sure you dowel each piece too. For example, if you're going to put his arm on, stick a dowel in the top of the arm portion, cover the RKT around the dowl with melted chocolate or royal icing, and then stick it together. Then I would probably cover him with chocolate ganche (maybe a .5:1 ratio) so the ganache gets hard and holds the entire thing together. Then buttercream or fondant over that

Thank you so much. This is actaully my first experience with RKT but the info you have provided makes it much clearer as to what I should do, I will post a pic of the end result

3D Elmo RKT cake topper tutorial (with RKT recipe):

http://www.cakescanada.com/HowTo/HowTo-Elmo.pdf

HTH