The biggest thing is that you don't want him to mess with it and start bleeding again when you aren't around. A healthy bird will USUALLY clot up...as long as he doesn't hit it on something, but just be very watchful.
I would consider getting a few silver nitrate swabs online for future use (in the event of an emergency in which corn-starch will not stop the bleeding)...Silver nitrate is not ideal (its not 100% safe), but (from what I understand) it is safer than other clotting powders...it basically is a hard, skinny swab (almost like a firework punk, but skinnier)...and you roll it on the wound and it creates a chemical burn that seals it (it didn't appear to cause Noodles much distress)..The point is, if used properly, they can't ingest it (which is way safer than the powdered clotting agents that are sometimes applied).
Noodles has had to use it many times sadly lol...not saying that doesn't mean that it doesn't have draw-backs, but the benefit of stopping the bleeding outweighed the risk of not using it (in her case)...Again, not saying it is ideal...corn-starch is more natural BUT when that doesn't work, it is nice to have a backup (she used to have clotting problems because she came to me with a liver issue which has since been corrected, but a bird with a liver problem can't clot well).