this was pretty simple. just get into a standard fighting stance and make sure that, during your uppercut, that you sort of twist your hand back at yo...

this was pretty simple. just get into a standard fighting stance and make sure that, during your uppercut, that you sort of twist your hand back at you so as to insure your knuckles will strike and not your fingers. but bend it too far back and you will hit them with the backside of your hand, making the attack weak and possibly hurtful to you