Looks like AI has a fairly decent understanding of glass too, particularly with pressing up against. Some faults still present of course, but overall great quality and quite cute.

Generated using NovelAI’s new Furry V3 model, and has shown tremendous improvement over the old version.
Positive prompt: pinkie pie (mlp), close up, hooves pushing against glass, face pushing against glass, raised hooves, feral, solo, licking
Negative prompt: anthro, human

Some notable improvements of the new version are: character recognition, subject separation (multiple characters in one scene much easier), improved cutie marks if present, more style variety and less washed out colors.