When I say tutorial, it really just means a bare bones introduction of this key does this thing. You don't even need an npc to explain it or anything. But also given that your the one working on it, it's not like you need it so it makes sense to save it for when you'd actually release the full game. That wing thing is a cool idea too, I hadn't thought of that but it kinda helps make the bug more of a presence. It's actually kinda scary how little animations can create such a big bond between players and fictional animals
The full game for sure has potential, there's so many exploration games on here, but I can't think of any that use flight as the main form of travel.