I'm in the same boat. I studied Art and Graphics, technical drawing, but drawing free-hand I would really like to improve. I can sketch and draw objects and structures - cars, buildings, etc, quite well, but I can't capture people particularly well.
I would love to be able to draw as well as some of the folks that upload their work, but I have come to think that drawing is one of those things that comes out naturally in people. It's very hard to "learn" when you only intend to do it for a specific purpose. It has to be simply for the joy first and foremost.
It's like near enough everyone says they'd like to learn to play the guitar, etc... But very few can.