Artwork (6 characters and a cover)

Need to design up to 6 characters and one scenic "cover" that will be used as Concept work for an online game (using the style attached, copyrighted to us). Excellent work done may lead to further work in the future. When you enter your bid, please identify how many characters you'll be design and whether you'll be doing the cover for that amount. Must be able to show past work similar to the attached, or be able to draw up something similar to this as a sample.