Depends on which program you are using. I use Photoshop, you can choose "save for web..." and it displays the amount of colors you are using. But you can also use other programs for it, like "color count". Link: dpmm.110mb.com/CKinesis/ColorCounter.html
Thanks for the detailed reply.
I didn't pay much attention to the colors when i was making it, i think, at least not to using as few colors as possilbe. But i didn't expect that it would have so many colors o.o
How do I see how many colors I have in one picture anyway?
I think your "weakness" is to chose the right colors and making a palette. You piece has 69 Colors at the moment, way to many. You could have done this with just 10-15 colors I think. In addition, your colors are not very interessting. I suggest you to use or study some good palettes, like the winners from the last 20 color palette contest (yes, I'm one of them) and replace some in you pixelart for testing or making a new one with them.
Good luck!
Thank you.
If you have any tips how i could improve, I'd be really thankful if you shere :3
again, thanks a bunch ^^
guess i still have a lot to learn~