I'm not a very good reference I'm afraid. I've been studying art since I was a kid (more than two decades, including art college) and pixel art since 2002 more or less. I don't think I could make something of that particular quality, but I could come close enough probably and maybe even improve certain parts (there's some small technical problems here and there).
On the other hand, there's people on this website that have been studying art for 5 years and that could probably match the quality of this easily. I'm a slow learner I guess, but you keep doing what you love
.
Copying art is one way to start out, that was used at least as far back as the renaissance as a teaching technique, so it's not too bad of an idea for now. Of course, you know that the first thing we're going to tell you to do is to pick up a pencil and start drawing. There's no such thing as someone good at pixel art, that's not also a good draftsman.
Hope to see some pictures soon