Im sorry, I will try to to do better next time, sorry :(
Your pixels need cleaner line work (those jaggy arrows!), and more thoughtful palettes. You can read about those here!
What is the concept? Are these arrows the recycling symbol? You might want to make this clearer: each piece is (or should be) telling us a story.
There's a stray pixel on the left side of both images.
That green arrow was just copy pasted and rotated wasn't it.
Don't be sorry. This is what this place is for: practicing, posting stuff, getting feedback, practicing more, posting better stuff, getting more feedback. Keep at it =)