Discouragement is the stage upon which all true intellectual adventures are acted out. Get used to it. Suck it in ... breathe it. It's all you're gonna' git.
Gazing upon this monstrosity (1 hrs work), you might think it all but impossible to finish. Yet I know from experience that
I also know that I could just put a high degree of finish on a piece of junk and many people would admire it as high quality. However, I want it to be structurally sound so ... I can't accept badly drawn animalia. Fundamentals ... then polish, polish, polish (or Polish? Errr ... No).
It is at this point that I find the drawing basically useless because they just don't scale up acceptably.
That's why I just sketched in a grid and body masses (which I have to change to some extent). I clean the brush off on the background because I don't know what's going to go there yet. The paint will tell me when I need to know.But then ... we draw to get ideas and work them out mentally. You may have thought that an artist paints with a brush but that's far from the truth ... A real artist paints with his mind. The thing is most likely already done ... in my mind ... somewhere. All I have to do now is slap it down and work out some details.
If this were not so, you would spend weeks painting over mistakes rather than quickly zeroing in on the end. Instead I'm thinking ... hmmmm ... 80 hours? Yah ... that'll do it.