Nice idea to make a tower defence game with a twist! The dreamcatcher web definitely makes an interesting base to place the towers and I like that you carried through the theme for all elements (especially the feathers as lives).
It could definitely do with some more visual cues and cleaner UI to help guide the player, as it took me a fair amount of trial and error to work out exactly how to place the towers, and I'm not sure if I fully understood how the upgrades worked by the end. It was still a fun game to play though, nice work!
- Matthew, MoonSprite