As many have said, start with what you like, then moves from there, however, the more detail you add the more its going to cost. A single color paint scheme can run can run any where from $800 to $1600, depending on where you live. But a full on custom one off paint scheme is easily in the $4500 range. Also try to find a local painter, or someone you can really trust, I just went thru this with Grindaz LLC in N. Carolina, they did great for cheap, but its not perfect. I have noticed overspray in a few areas and a few other issues that I have with the job, nothing major, but it matters to me. I don't really blame them as much as I blame myself for trying to be cheap. They gave a great price of $1550 for a solid color, custom graphics, most of the body work included (both lowers, tails section, and tank pads), and shipping. Its a great starter paint job, but when I get more funds I may have it redone as a truly custom paint scheme.