UI icons/buttons for WIP old-school RPG

[Rhuantavan]

Hi everybody, this is my first post and I've just started working on the UI for my game. Up to now I've been mostly doing low-res texturing work on low-poly 3d models, but this is one of my early ventures into pixel art. I'd like to know on how to improve the following three icons:



From L to R they represent the journal, camp, and map actions.

Thank you!

[Bollie]

It looks like you just downsized bigger assets. You should use way less colors and avoid automatic anti-aliasing!

[Rhuantavan]

Thanks, I've been using a brush instead of a pixel tool to draw these. Here are the camp and journal icons using the pixel tool.

[Bollie]

It's looking better. The campfire is still still using many colors that look very similar. Make every color count!
Made a small edit to show what i mean:

[Rhuantavan]

Cool! Digging the highlights on the firewood, but I'll try to go a middle path between the flame colors. I like them a bit muted.