What can we say, you're well on the way to become a master painter, love those conceptual heads you did, I saw them on conceptart and wow! They almost look they've been rendered in 3ds max and touched up in photoshop! Real cool! I think you're doing awesome to just pick something you love and then work hard at it. Inspirational! Keep it up!
thanks man, lately though its been getting hard to stick at it. I have to force myself to do this shit :P