and most of the active GFX people here has an astonish progression in their ability to create sig. Sadly, I feel like sky should be the limit but most of the time, people restrain them self to a lower level just because they aren't letting the creative part of their dig making and just stay into the "I must produce something" like it was a work task, which shouldn't be the case imo.
I feel like an hypocrite right now, because as a GM, of course, I want you to produce a shit load of sig just so you are able to do a PT every week, that is my job. But as an artist (which is very vague term), progression in your GFX game is key to greater things.