this style is interesting, I suggest to change the preview since it looks awful.
Don't AA that, it looks great The bottom half the reflection is very interesting; I know maybe this doesn't matter, but I'd really like to see it contextualized with the top so I could know "what it is"
I love this palette, especially the darkest shadows. Very nice style as well, just all around fantastic!
Any particular reason you didn't AA the edges to the background???
Inconsistent line width looks awful on preview but great in 1x. Maybe change the preview?
Thanks for the comments! Changed preview image ;)