As I expected from ZFGC that everyone gets very excited from a 3D Model... I mean, it's just a 3D model O_o
I'll give you my critique. The head is a bit off, it looks very buggy. As you can see, there are many gray stripes at the face. That means you got a plenty of buggy holes there. Try to fix that to smooth it a bit. Or remake the head, it doesn't looks like link. The same counts for the hair, link has more pointy hair, the hair you got looks more like some kind of thick and non-styled hair. Try to make the hair look realistic and more like link. As you said "TP link". Your link model has a big different color from the actual "TP link", it's not even OoT or WW style. The last thing are the shoulders, they can be some smaller.
Other than that, it's a nice model. Keep practicing and fixing, then rendering it including textures. And it'll/you'll be really good.
Edit: Oh by the way, did you used a tutorial? So yes, which one is it? I want to learn modeling characters too, I only know how they work theoretical, that's why I never post my models