Hi, I'm new to the pixel-art community. I made some sprites for characters (I took inspiration and references in the sprites of Drawn to Life's characters.) to begin softly before making things without reference. I would like to know how I could improve and what you would recommend me to do.

Edit: The image isn't showing even though I clicked on the "insert image" thing and put the URL of my image, can someone tell me what I did wrong?