8 Digital Head and Shoulder Caricatures

I am looking for someone to prepare 8 digital head and shoulder caricatures from head and shoulder photographs. They will be used on our website and in our marketing material. I may have a further 8 depending on price and quality. I do not have a deadline for this work other than I would like one completing roughly every week. I will need the images in two sizes, A4 and a smaller one for the website. I can let the successful bidder have access to the site the pictures will be published on.