Sweet Valley High cover illustrator James L. Mathewuse still takes commissions on his site. Imagine you or your friends rendered in glorious 80s pastels or oils!
From his bio:
As one of the New York publishing houses' popular illustrators, Mathewuse also became the sole artist who created over 250 covers for the "Sweet Valley High" and "Sweet Valley Twins" young adult romance series. Another young adult book, "Tiger Eyes" by Judy Blume, won the prestigious honors for "Best Young Adult Book of the Year." The young adult series that Jimmy painted have been recognized as the largest selling, not only in America, but in the world.