They look like a novice home paint job and quite natural :-)
I went through a stage of being allergic to pretty much everything so if i wanted painted nails I had to use fake nails, I used to stick them to the end of a pencil with bluetack, then I'd paint and let them dry completely before attaching them. I had a few sets done in advance so I could grab and go
Luckily my allergies went after a couple of years and I can paint my own again