Sorry I'm on my phone won't be able to get a pid. You will want to use pokegen set to the right method. To get one or find one on a forum
Edit: Home now. Heres a quick Mew I made for you. Your free to edit the moves and level DON'T TOUCH the Iv's or nature or shinyness (PID Linked information) as you'll make it non legal.
151 ★ - ミュウ - C01616AFE74D.pk7