Yep, I guess if you pick one which looks the right size then it is the right size already!
My Wol was a lot larger so I had to do what I describe above, plus a bit more cleaning up round the edges because I wanted to. But if you find what you want ready made, then hey-ho, you’re home and hosed!
(I knew I wanted Wol so I was looking for him rather than a picture that would necessarily work straight off. )