Hi
The best thing is simple, just do it... a lot. Super cliche, but there's a reason for cliches: they're usually pretty true. So put work into it absolutely every day. I'd advise going with the 30 minute class mode here to get you some quick gestures, and some longer poses that you can measure with. I'd also say look around on the net for different proportional systems. Most every artist from the renaissance used one or made up his own, so I'd say learn one, use it as a basis until you can get a better feel for the forms and don't need it. Do you know the trick to measure by holding up your pencil? Again, just practice it a lot. You may not see the improvement very readily because you'll be seeing it progress, but after a week, then 2 weeks, then 3 weeks look at your earlier work and if you do practice, at least one 30 minute session each day, the improvement will be obvious.
