Welcome to the site! Its way more fun interacting! And believe me, although you can get better at art on your own, it goes much smoother and quicker when you ask for input and critique on sites like this. This one is a little less active than I'd like, but the people here are friendly and we try to help when we can.
Now I can tell you draw a lot by your gesture drawings. WHen you use less lines, the motion of the figure comes through. But a thing you need to work on is line confidence. You are drawing lines over and over, trying to get the angles right. If you took your time a little bit when drawing the first line, you'll practice getting it right the first time and you'll practice visualizing the line in your head.
If you are having trouble stopping your hand from doing frantic scribbling lines, hold it slightly above the monitor and "ghost" the line until you are a bit more confident with the angle, then apply pressure.
THats the tip I tend to give everyone at some point, but scribbly lines are something we all struggle with and writing this advice out helps remind me to stick with it myself. Keep it up, you are very talented!