I've worked with Gemma for a number of years now and I keep going back to her. Not only is she an outstanding illustrator, but she's also a mind reader! With limited guidance from me, she always seems to know exactly what I want or need and is able to produce it with quick turnaround times. 

She created the character Suzie the Scientist and did an outstanding job in illustrating the book series. I then went back to her for the Millie the Mathematician series.

Ultra-professional, ultra-reliable, fantastic imagination, extremely talented illustrator and, most importantly, a wonderful person. Gemma comes with my highest recommendation.