Wanted to share my two cents with you.
Firstly, i'd stick to drawing first, get that down then work in colour, rather than both simultaneously. I tried a self portrait in colour pencils and realised I do not have the skill for colour yet, it's a whole other ball game, so I strongly recommend ironing out all the creases in your drawing skills before even using any colour. Also stick with traditional mediums to begin with, leave digital for later.
Having said that your picture of the coins shows a great eye for detail and charactistics of light, so when you do take on colour, you have some skill. The figures and women's faces in 7 though show how great your drawing is, and can become. I cannot repeat enough that if I were you, i'd stick with your drawing, then progress to painting then digital, and your drawing is sooo good that you wouldn't have long to go.
The woman in 14 looks a little chubby, her cheek is too wide and the left eye seems too small.
Girl in 61 seems to have lips that are far too big.
Also your hips on your women are FAAAAAARRRRRR too big, too wide, lol. Sometimes they are even protruding higher than the waist, this creates the illusion that all your women are compressed as if they've been through one of those car crushing machines, practice drawing women from life then let this be a style choice later on if needs be.
Besides this most of your drawings are pretty good and you have certainly covered most of the hard skills in drawing, like hair. How do you draw HAIR? It's AMAZING. Some of your people have hair that suits them, which is cool since you are drawing some from imagination (don't be afraid to draw from life, then your imagination will be better). The girl with leaves in 14 for example, amazing.
The drawing on the right side of the brain book has some info on hair, though i've been unable to grasp it yet. You seem to have intuitively grasped how to render hair, which is cool.
The male face in 107 is amazing considering you are using a small palette of colours.
DRAW THE FULL FIGURE! FROM LIFE! Lol. Dude your drawings are so good that tackling the full figure is your next challenge, while noobs like me are tackling the face, you have most of that down, so the next stage for you is the rest of the person. The drawing of your cousin for example, imagine that with a body, and that's where you are heading next. Now that will be spectactular to look at.
Overall you are using a lot of your potential, there are only little bits you need to get right. Pushing yourself to complete a whole figure and stick with drawing for a while will turn you to a great.