I like the Humpback Whale drawings the most
Looks like it's all done in colored pencil, have you tried water color or oil yet? Or have you tried Photo Shop with a tablet?
Not to be personal but how old are you? You have an amazing talent and I'd love to see more of your work. If you are not a member already you should sign up at Deviant Art
and show off your work there. My page is located here