Hot Rod Design

[Mr. Mopar]

Hello,
I'm new here, but was wondering whether you guys could help me out with something. I'm entering a hot rod design contest and am having some difficulty. I've drawn up some rough sketches and have a number of features I'd like to include. Problem is, I don't know which features to choose. Could you give me an idea of which features'd look best by picking from the list sandwiched between the cars? Examples of each feature are seen on one of the cars. Thanks!