No problem, I'm currently trying to learn digital drawing and art too! ^ (it's hard xD ) but you have achieved a great look to the game, so keep at it! The animations were also really good ( thanks for checking out the timelapse btw :) )
These are good ideas, would be really interesting to see an attack type system in there. Might also be cool if you have some sort of mechanism for either hinting which way to go or adding a bit of strategy to the direction you choose, maybe use those chests to include items like 'preview 3 tiles' or something of the likes and toy around with ideas that make you think a bit when playing. I totally think you can expand on it and experiment with additional gameplay aspects, and building up difficulty as time goes on works well with a game like that - great start in any case :)