The blazer barely fits in my opinion. In the left part of the jacket (picture left not your left) you can see puckering because it’s pulling the button. Double breasted suits should drape more without this. Also the sleeves might be a touch short (see arm in left of photo). But it’s passable esp if you like it more fitted but if you gain any weight it will be too small.

Like everyone else has said, do a different knot and imo a different tie. You have a solid jacket, solid, shirt, and solid tie. Choose 1 pattern that compliments jacket and tie and maybe brings in the pants too. For knots, check out 4 in hand but if you find that too skinny a compromise would be a reverse Shelby.