Pretty sizable update. (Nice!)
Well, my digital stuff is waaay ahead of my traditional stuff (what little that I do - I almost ALWAYS work digitally) so maybe we can help each other out with each other's strengths/weaknesses and flip flop advice. Since digital is what I'm most comfortable with, that's where I can help the most and maybe that'll be my niche where you're concerned. ^_^
I see the color black. (Or something that's appearing super-close, if not exact, on my screen.) Shame, shame on you young man! XD Black KILLS colors. Never use it. Don't paint ANYTHING with it. It sucks the life out of anything you're painting and will make it look flat / wrong to the eye. (Because even in the darkest of dark-ity darks, it's an actual color -- It's never black. There's no such thing as a true black or white when you're looking to paint things because those two colors always either absorb or reflect the colors that are around them. They're always taking on the tint/color of something else! Even if you THINK something is black or white, look at it again! (When I figured this out it kind of blew my mind. It wasn't something I had ever thought about before and then, when someone pointed it out to me, I was like "Woah." You'll get the full effect if you say that like Keanu Reeves would, btw. Bonus points if you actually do it out loud. XD)
Get that black out of your swatches! (I saw it in the first piece with the guitar and said "OHNOEZ!", then didn't see it in the swatches on the second piece with the girl and got excited -- then you were sneaky and snuck it in on her face for the eyes/brows/mouth! >:0 Skunked!) The same goes for white, too Don't paint with that either. (For highlights or otherwise. Same rules apply to white as they do to black.)
That all being said, if you want to do your sketch with black, that's fine. I like that you thinned out your brush to sketch for the last piece with the girl. (It was probably much easier to paint over with the lines being so much smaller so there was much less black to fuss with.)
BTW - I really like the pencil "Rage" piece. Some nice expression on that one! ^_^
Hope you're going try to start the Caravaggio piece this week -- I'm curious to see what you do with it! (Could be some really good practice for your digital stuff!)
Keep up the good work!