I just started trying to shoot a flatbow.  Can anyone give me any pointers on anything that could help me.  Thanks

Get the properly spined arrows and practice alot?! You'd get more help if you could let folks know what was ailin' ya. Gettin poor arrow flight , can't hit the broadside of a barn from inside it or are ya geting a sharp stabbing pain in the belly every time ya shoot? ( turn the bow around!)

I just dont know very much about it.  I can hit the target.  I am switching over from the training wheels and love it.  I just wandered if anyone could recommend anything.  Ive been shooting off the knuckle and think I might build a shelf- any thoughts?  I also have been slapping my wrist very bad and I have read to move the wrist to just past center, is this correct?  Thanks