If you're looking for critique based on how a Wyandotte SHOULD look like. . .
He's a typical hatchery bird, so. . . He's got way too long, big, and high set of a tail, too skinny of a body, so far he looks to have too long of legs, too, his lacing is quite poor, and his back is too long. However, he does have a good comb, and at least he doesn't have a squirrel tail or practical "spangling" like a lot of other hatchery-quality Wyandottes.
Otherwise, as a plain 'ol backyard rooster, if you like him, that's what matters.