compression test

Hi everyone! I have a 2015 mustang gt with about 64k miles, its got a tune from lund but other than that its stock. ive been chasing a misfire for a while now that mainly happens at high rpms at wot and i finally got around to pulling all the plugs (again) and doing a compression test. heres a...

I want to perform a compression test on my mustang but can't find any information on how to do this? I've looked in my owners manual, it's not listed, and it's also not in any subsections of the chapter topics. Help! Quick!