A huge part of the challenge is getting the dead ringer with the help of reference photos that aren't high-res That is what is confusing, though ... with low-resolution source material, how accurate is your clone going to be? Source material that is captured from DVD or VHS is extremely grainy (through analog degradation or digital compression). Plus in that case you are working with a graphic that is, at best, 480 pixels high. That can make a HUGE difference in appearance with a closeup. Aside from that, even if using celebrity photos from the Internet WERE legal, you'd be hard-pressed to find two photos where coloring and lighting is uniform and suitable to match between front and side views. That is where you have to accomplish a lot in your photo app, but even then you have to compensate for data loss by compression (which you can NEVER recover). You might be able to make adjustments by applying some filtering, but it will never be as good as a first-generation, uncompressed photo. And the source quality would be very telling in a large closeup render. So why limit yourself by starting with low-quality source material? If the goal is accurate cloning, and you're investing thousands of dollars in the software that accomplishes it, why skimp on the very photos that you use to make the clones?