I agree with the others on the tablet saying.
I use a Cintiq 21ux, a professional high end tablet, I did feel like it helped me a bit because it made the drawing and coloring process faster, but as for my "skill" that didn't improve because of my tablet - it improved because of my willingness to get better and also much practice.
I too also have to work on full bodies. I also have to work on clothing folds and depicting ages and different perspectives. As artists, we'll always keep on learning! biggrin
A tablet is always nice to have, because it's something different to use, but it's also really cool drawing with the good ole paper and pencil. Give it a go!
I also hiiiiighly recommend drawing from life. Use as many photo references as you can, and if you ever feel like being a bit of a creeper sweatdrop, go to the mall or park and just draw people. Always awesome places to find interesting people to sketch. :3
Photo refs have helped me quite a bit so far, though I still have plenty to learn as well.
....Why is everyone talking about tablets? Did the OP edit something about tablets out of her post?
Tablets rock, but if you can't do it with a pencil, you can't do it with a tablet.
See, look, now I'm on the mystery tablet band-wagon. Don't see anything about tablets.gonk
She did edit the post, originally she simply said she couldn't color well or do full bodies and that she didn't have a "fancy tablet". I'm going to assume she edited it for more specific or different advice. Whether or not she'll listen to advice given already really doesn't bother me though. ;P