Book Cover/Photoshop Expert/Cover Design/children's book

We are a group of kind Teachers (3 of us ) that write and publish Children Books and Activity Books for Children, Notebooks, Journals, to help and improve others progress in life, we are looking for VA assistance that can fast the process for us, his or her mostly job is:
1-to make cover design
2-add / modify the interior design of the book
3-can design Animals or Things if needed
most of the time we send you the copy and we ask for the modification, it's a long term business and we promise to provide an extra salary for the motivated hard workes.