I really like the ambience of your game. The music is nice and peaceful and little mushrooms are always cute. It was fun to explore the level. I found the house, but was unfortunately unable to reach it. It looked different than the house on your picture.
Theirfor I do not know if the dirt tiles blocking the way in my version will be in the final version. But if your are planning to use them I would recommend grass tiles instead. I was also able to look over the edge of the map. I would fill this area with dirt tiles. The game runs kinda slow on my computer. So it would be nice if you would be able to optimize the performance. I also noticed that you are able to stand in mid air for a few second when jumping against something on top of you. The last minor issue I noticed was that you wrote "WASD of arrow keys" instead of "WASD or arrow keys" . Most of these issues are pretty minor and I am confident that you are able to fix them. I think that your game has a lot of potential and I'll look forward playing the final version.