There's nothing worse than growing your nails out all nice and even then having one tear! Then you pretty much have to cut the nail with the tear and the cut rest of your nails down to match. Oye! I hate that!
Fortunately, we're not the first people on earth with this problem. lol
Use a buffer to even out the texture of your nail (which will be quite rough at this point).
Avert your eyes! Natural nails coming up!
My pitiful nail here with a tear... :( Owwie! This picture also includes the wrap on top. I'm not sure why I didn't get a "before the wrap" picture.
After you smooth out your wrap, you can apply a base coat (probably a ridge filler would be a great bonus!) and paint your nails. It won't even look like anything happened! :)
I usually have to replace my wraps every few days, but it gets the job done until my nail grows out far enough for me to cut off the damaged part. Perhaps roughing up your nail before applying the wrap/glue would be the best approach.