At what point is it not considered a sketch? That there looks really highly finished for a sketch

Yeah, I am not fond of how my linework looks uncolored. Just how that goes. But if people tip they get more added onto their sketch, so that typically means just some more shading.
Here are links to my sketch gallery and my painting gallery. There is a difference in quality, level of detail etc.
http://www.furaffinity.net/gallery/.....00921/Sketches
http://www.furaffinity.net/gallery/.....gs-High-Detail

Im always pushing to improve. But that said, my regular commissions have come to expect a certain level of quality from me regarding sketches.
Hence the high price point and great value.
Draegonis is a regular commissioner who always tips, so his end up with a little bit more finish to them so to speak. Not to say I neglect those who dont.
Regardless, take a look through my gallery.