@moonspark Some additional people to look to for inspiration; Iain McCaig, Tim Gula (these first two are really good people to watch in terms of how to physically move while drawing) Terryl Whitlatch, JAW Cooper, Eliza Ivanova, Claire Wendling, Frank Cho (for inking especially), Glen Vilppu, Norman Rockwell, JC Leyendecker, Dean Cornwell.
If you can set aside 30-90 minutes to draw daily (and doing it on public transit if possible or at a laundromat counts) that will help you improve a lot.
@moonspark Also; always try to analyze rather than just copy or judge. When you copy other peoples' art, try to figure out what makes it work, what they're seeing. When you like or hate your own stuff, try to figure out what it is that's working or not working. Forgive yourself a lot; there are a lot of mistakes you can make, but the only way to find out they exist is to go draw stuff, and make the mistakes.