I'd say check some basic rules about shapes and colors in pixel art in basically any beginners guide online, and start with smaller resolutions.
It took me years of short attempts to learn it before it finally clicked for me this time. Posting stuff online and getting feedback motivated me I guess.

If anything feel free to give feedback it'll be a huge help since my works are kinda hit or miss lately and I'm still rather new to this

Well I'm at least completely satisfied with the background but I hope she looks good too

Oh, yeah, I do see this on top of my post. Thank you anyway, I'll try to always remember to mark my stuff appropriately

Also, I've never seen labels on the others' works, but I have filters turned off too so idk

I do add the "adult" label? Or is there something else?

I usually don't add watermarks but this one is here to hide a poorly drawn hand.

Let's hope Kazuichi doesn't find it