I really like the concept of changing between the two worlds , but sadly i wasnt able progress any further than the beginning, maybe you can add a short description about all button inputs and explain a bit what you have to do. Sometimes i was also really confused about the art because of its simplicity.
I think if you add sounds/music make the visuals clearer and add some explanation and it could really enhance the game.
Viewing post in OtherSide jam comments
So for audio I would suggest some free site like free sound,
And with not able to be moving forward I meant that I sadly had no idea what to do I ran from the left side to the right side but couldn't find anything, except a pedestal with something on it, when I picked it up nothing happened and I didn't know what to do next