I think it's the colors, most traditional art would have colors like those. I liked it initially but switched to a more digital look. That's also why I chose to draw on my PC so I would have consistent brushes on final works, the brushes I have on iPad are different haha.
Right? I felt this way too, that's probably why it took me a while to finish.
I looked at them again, and yeah, you might be right. It was the muted colors that made it feel more traditional.