Scyther doesn't evolve at a certain level. You must give it the metal coat and trade it. Then have your friend trade it back to you.
Scyther evolves into Scizor when traded while holding a Metal Coat.
Metal Coat. Trade Scyther while holding it to evolve it into Scizor. You can find one in the house on Iron Island (Byron's vacation house.)
Level 30.
level 40
Level 32.
level 26 ^^
On level 20.
at level 32
At level 59
Level 16
Level 16.
it will evovle at level forty-five