Illustrator for children coloring book

I am a book publisher and would like to create a series of children coloring book ie dinasours, dragon, cats, narwhal, ninja

I would like to hire an illustrator to do SIMPLE BACKGROUND DESIGNS ONLY for my book. I will supply the pictures of the main theme ie dinasours, cats, narwhal in vector form and will need the illustrator to design the background only.

Each theme will consists of about 30 pictures.

The coloring book is targeted at younger children ie 3-8 so no complicate designs are required.

pls take a look at this sample:-
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As i would be producing a series of work, this assignment is more suitable for serious and committed ppl looking for a longer term job.