Hi there, and thank you so much for your purchase!
To fix the alignment issue when flipping the character, you just need to adjust the pivot point directly inside your game engine.
I recommend placing the pivot at the bottom-center (at the character's feet).
This will not only ensure a perfect flip, but it also guarantees that the spawn point aligns correctly with the base of the character.
I usually crop my sprites tightly (without centering them in the frame) to avoid unnecessary empty pixels and keep the PNG files as lightweight and optimized as possible.
If you need any help adjusting the pivot, just let me know!
By the way, which engine are you using?
Viewing post in 2D Pixel Quest Vol.9 - The Ogre comments
Look, unfortunately I can't add the anchor points manually.
It would be a very long and inefficient process, especially since any engine allows you to adjust pivots in a heartbeat.
Usually, you don't need to move the point on every single frame: you just set it once on the root of the sprite and all associated animations will detect it automatically.
Calibrating and recentering assets depending on the game engine is a completely normal procedure.
Here is a quick test: same sprites, but with the pivot manually repositioned across the entire set. It takes just four seconds in total.
https://gd.games/barelyapes/the-ogre
If you tell me which engine you are using, I’d be happy to help you figure out how to move the pivot quickly in just a few clicks!