Cartoon head shot

Hi, Wanting to have a simple "Cool Dude" head cartoon character drawn similar to attached file. Obviously it has to be different for copyright purposes but I want to retain the cool dude effect. Note: I must see samples of past work as this has to be VERY good. Delivered in Photoshop as separate layer. I will want to change background so it must not have any shadows or anything that will look strange when change background color. This has to be 100% original and I must have full copyright/ownership of the image as I will be using it as a company Logo. Regards Jeff