How
Climb for a while, find someone not paying attention. Do a little pew pew. Try not to have the same thing happen to you.
P-63 is a fatter yak, but it goes faster and packs more firepower. (All rounder)
Like most of cobra family (P-39N-0, P-39Q-5, P-63A-5, P-63A-10 ) except P-63C-5, excels at low altitude and struggles a lot higher up, more so than Yakolevs in fact.
Its not a very good aircraft, just use anything else