Advice in rugby? (for people of advanced rugby knowledge)?

First of all the muscle building will take years not months, you may gain some muscle and definition soon but dont expect to hulk up right now. If you have good vision and a decent foot, as well as leadership try out for fly half. Flyhalf is a pivitol position so if you think you cant do it your absolutely right already. you skills as a flanker will lend to a good strong flyhalf position, your abilities gained in close quarters and "" should help greatly. as well as training hard in the gym make sure to spent time on hand eye co-ordination(play games involving like tabletennis cricket etc) and improve that kicking skill as well. good luck