Sprites!
This is Nica, the heroine of Language of Lyse. Her spritesheet contains an idle pose (which I haven't animated), walking animations and running animations.
All sprites are 48px by 76px. It is a bit of an unusual size, since I started out with 48px by 96px. I only noticed very late that the latter size would not look good with the tilesets in RPG Maker.
All animations are 8 frames. I use Game Character Hub to make them, as it has a preview window.