The animation of the vacuum cleaner is a good touch. I also find the pixel art cool, but the game has no music and I strongly suggest to add some.
I understand that you are a beginner and to be honest I am not much of an expert neither, but it is surprisingly easy to add background music and sound effects (I did mine in the last 10 hours of the jam). Also there are some great tutorials on YouTube that you should check.
But I like the original idea and I'm looking forward to some improvements.