Ciao Alessandro

That is a very handsome piece, and you look good in it. However, in the first photo your real hair at the sides looks rather thin by comparison with your piece, and that is making the blending issue more obvious. Was that photo taken when your real hair was wet or sweaty? If not, you might want to think of using some scalp make-up (Toppik or something similar) to make your real hair look a bit thicker.