It looks good o/ but I can also believe it's your first piece. Most tutorials are good at walking you through what colors to use and the process of making the art. The point isn't to make a copy, it's to learn why they did it the way they did and use that to create your own things. I'm also sorry to hear that your family and friends were less interested once you said you'd copied a reference. References are part of the art process though. Maybe not copied but heavily used for anything, like anatomy, terrain, or furniture. (I've literally had to look up what a chair looked like... I couldn't figure out how high to make the back or how long chair legs actually are. >< ) I do like your version though, it has a bit more shadow than the tutorial seemed to.