[LONGHAIR]

unclebrad did a fantastic job on that green truck. It is quite a challenge to make something like that look good.

The thing that most people miss with their requests is the condition of the source material. (your original pic) Bad pics, for whatever reason, are exceptionally hard to manipulate into something that looks real. I kind of got burned out on it years ago, because it just kept getting worse.
Good pics can result in some pretty spectacular final results or at least some fun silly stuff.

The first one is an example of a bad/unrealistic request. I spent untold hours to have it still not look real.
The second 2 don't even exist as real trucks, in this form. They were both single cab trucks.
The fourth one took 2 very specific shots from the same position.
The last one is from a hugely popular thing years ago. Hundreds of these were done back then. It still has requirements to look right though, just any pic won't do.