This could really benefit from Pointer Lock API (https://developer.mozilla.org/en-US/docs/Web/API/Pointer_Lock_API). If you’re not doing that, you should keep the cursor visible, since reaching the end of the window is a problem for unlocked pointers.
Beyond that, the game looks great. But I couldn’t figure out what to do. It told me to find the missing flower, then a bunch of other things, and I couldn’t complete any of them.