If you build a Mos Eisley/Espa Diorama, you're bound to want some Jawas in there. But you don't want them to all look the same. In fact, you're such a perfectionist that no two Jawas can possibly be the same. How could you do this? Easy.
Step 1
The first thing do do would be paint the Jawas different colors.
Step 2
Another thing you might do is switch the Jawas' body parts around. To make a Jawa that looks really small, you could put a Jawa head on a Yoda body, and paint. Switch the body parts around, paint, and you'll have a whole load of Jawas that all look different.