User blog comment:PlantyThePottedPlant/Random Topic Blogging II: Electric Blogaloo/@comment-3479827-20120731214243

A good way to test how decently designed your second-generation character is a bit of theft (which is not meant to be flaunted)--edit a picture of Isabella in paint or a similar program to look like her (or Phineas if it's a boy). The more time and precision it takes to get the look replicated is usually proportionate to how good the design is.

I say "usually" because there's a chance you just suck at paint.