The VG Resource

Diddy's head is rather large.

Yeah I know, I was having a lot of trouble with Diddy because I didn't want him to be shorter than Toad. What do you suggest?

You could try lowering his hat and shrinking his nose a bit.
EDIT:
Kind of like this.

They're good, but I find Waluigi's profile very straight: doesn't his chin jut out more?

Hm yes I got top fix Waluigi too. He's been bugging me for a while. I'll also work on a solution on Diddy thanks everyone!