good job with filling in here ^^ and the shadowing can make some improofment but your going the right way (tutorials on youtube always help ;) ) anyway the only thing i can help with here is the legs are usually close toghter near the crosh area and if you want to draw boobs a bit from the side you can see a bit of a curv outside the body (for this picture thats on the right side but don't do it to much) anyway i hope that helps.