For Builders: Tips on Creating Better Tester Families

I think i may consider joining n on one of your zoo u courses, i use tester sims but i think a high level skilled sim would be awesome! For like paintings or photographs (from photography skill) would be good to have in a home to give it that touch of 'uniqueness' ....no.... that's not the word.... personality? I don't know, the word has disappeared from my brain xD I'm sure you know what i mean :D