Nice simple first map, well made and sufficiently lit but there's no need to go into the room with the cube because the cube is unnecessary (the flip-up panel doesn't work anyway, it's always up), and there's also no need for the funnel or the blue gel. You should get someone to playtest your map before you publish to find these problems. Don't give up, the mistakes can be fixed. Thanks for your efforts.

Are the bounce gel and the tractor beam just red herrings? Can solve without using either

Blue liquid is unnecesary