This kind of gameplay isn't my cup of tea, but it feels like this is quite complete (multiple small puzzles, progression towards a long term goal that we end up achieving).
The main issue i have with it is that the door has nothing to indicate it can be used, i almost thought there was nothing more to do when i finished the painting.
There is already a lot for such a short game jam, but it feels like having optionnal tasks could improve the experience a lot.
Finally, the slow movement is totally accurate to real depression, so good job on that ^^