I agree with Chip. in that you use your boomerang where a bomb would be better.
It seems that you go to far out of your way to land a projectile hit, and it tends to slow you down or get you hit.
Nice job of covering your edge with bombs when recovering, that's important. Your bow is a very situational tool, remember. I think you're overusing it just a tad. Again, going out of your way to hit with a projectile when a normal attack would work just fine.
Your overall ground game is pretty good, but something about the way you play looks as though you're trying to be a Link from time to time, rather than the Young Link you are. Granted, Young Link and Link overlap in some places, but there's a definite distinction between where each character excells and falls short.
Try approaching with your nair a bit more, and remember that Young Link's boomerang is more delicate than Link's. More angles of deployment are available to him, and oblique angles cause the boomerang to bouce back on itself, so be careful when angling downwards from the ground.
Actually, it might not be a bad idea to get into the habit of short hopping before you throw a boomerang anyway. It makes you a bit more mobile and less of a target.
Hope this helps.