Children story book's character illustration

Hi, I need an illustrator to illustrate a story book about 8-10 pages with story cover, age 2 to 8 years. Books will be as series, each telling a different story. There will be main characters and helper ones.. Stories will be provided to you with a simple sketching telling the environment, characters and their dialogs etc.. Output work must be in vector file format. Since there will be many stories, i am seeking for a longterm relationship with fixed-price for each story. Please send me your portfolio of smiler work you previously have done. Applicant requirements: 1. Seeking long-term partnership. Bid only if interested in servicing our team on a long term basis. We have many projects and spin offs in the works. 2. Serious bidders only. Do NOT bid if not interested in long term partnership. 3. Looking for someone who is both reliable and professional. 4. Please provide samples of previous graphic work done; Payment: 1. 100% payment into escrow prior to start of project. 2. 100% release of payment within 48 hours AFTER completion of graphic art work.