I think all I really need help on is the colors, but feel free to say anything else.

Bumpety bump. Should I just make them their regular colors? Black and red?

you dont need the half/half device imo. show the objects as they are

Hmm...yeah I think that might work. Well I'm submitting a recolored version that I just did, I'll draw up a non-half/half version soon.

Recolored...thoughts?

Well, here's my advice (as someone who's never submitted a design).

Either go with the half-half in this colour scheme, or go with the non half-half in the originial scheme. I can't tell which I like more until I see the non half-half art.