That definately looks much better than before. I think the shirt might be nice as a brighter beige, but overall it looks pretty much what I'd imagine Mars Falco as!
optimus prime doesnt even have a size mod, he's the exact same size as ganon xD also, im very happy to see every single hack of mine for ganon being requested, and im even more happy to see how well you manage to pull them off in a CSP!
I'm not sure why, but Optimus just ends up being huge for whatever reason, like this: