try it, there's no harm in it. i do want to point out how odd it is you can wish for beauty and become a sculpture which is an impossible feet for a human, but then states you shouldn't wish for impossible feets like becoming a vampire. consistency please. i wish spells could be edited like rituals, this spell has some potential, but needs to be fixed up a little, you could just say be careful what you wish for, i do [a lot lol] and it means just that. at this moment you want that cute boy in the lunchroom, so you cast a love spell, a few months down the road you realize the two of you have nothing in common, so you break up with him, but the spell won't be broken so easily [depending on the spell] so now you have someone who won't leave you alone. no one to blame but yourself.
so try it, if you're looking for an A on a test, or give permission to go somewhere with some friends, but not for something really big.