I don't think it is possible to make it look very natural if you shave all of the hair off of your hands and then suddenly have hair starting at your wrist. I have been trying this for years (trimming forearm hair and shaving my hands completely) and it has always looked bad. It sucks because the older I get (I am 29), the darker/coarser my forearm hair gets, so the cut off between my shaven hands and my hairy forearms becomes even more pronounced and stupid looking. I have essentially taken to hiding my arms under long sleeve shirts for years, not fun on summer days.
I have brownish/reddish hair, so it is definitely not optimal for laser removal, but I feel that it may eventually be my only hope.
If any one has any suggestions on how to make my arm hair look more natural, let me know!