That's ok! I'm using free tilesets and my enemy sprites are from pokemon for now. And glad I helped inspire you a bit. Your reason is the EXACT reason I started documenting my progress a bit. I wanted to share information in case other newbies got stuck, but more selfishly, I figured if I'm publicly posting my progress, it'll help me stay focused a bit and also be able to see how far I have come from the beginning.
Heck, at this point, I don't really have any more content than when I started; however, what I have so far is definitely reflective of an actual game now much moreso than just sprites moving around a little bit. Seeing that progress helps keep me motivated and I hope your progress can help do the same for you!