Thanks for the feedback Nightspeller. Your potion doesn't look bad, just needs a couple pixels adding in the shadow and the liquid should have a steady line on top. and I think the trap would look ok with a less vibrant purple and the middle line a darker purple.
I will probably do one last update, which will include edits from jclaws. I don't know if I'll be able to do all of your suggestions but I'll include some of them for sure.
I'm familiar with Github, I'll definitely consider that once I've made the final update.
Remember my icons are basically edited icons from game-icons.net, so you can easily make edits by shrinking 'em down and working on top of them. And this is the palette used: https://lospec.com/palette-list/mail-24 (with some small additions) - I hope this helps!