Coloring Book

I am looking for an experienced artist to create a coloring book for my adult audience. I have specific ideas for illustrations that I am looking to include, ranging from 1-3 illustrations. The artist must have experience in creating detailed and realistic art that are visually appealing for adults. The chosen artist must be able to provide various layer options for digital editing once the artwork is finished. Lastly, the artist must show concern for customer satisfaction with quick turnaround time and open to feedback from the customer. This project is time sensitive so punctuality will be key.