yeah..if the photo is ur reference, you maybe could ask 'stuffbyalex' for coloring help..he's the god of coloring in my eyes haha..
and I love that painting with the girl on the car!! i can only draw products, no people.. i wish i could draw people, but thats another thing i have to spend a lot of time to..
and for the coloring of ur drawing..i dunno how long it took you to draw, but maybe you can draw it a few more times and everytime make it better..and then try to color one first..and if that goes wrong, you have some backup sketches.. I allways draw my car's 1000ths to improve the design and then im going to color it.
haha..this looks like a conversation in messenger