In this project, I have tried three different ways to create sprites. I have drawn my own, I have uploaded a drawing and animated it, and I have created a new sprite from two sprites in the sprite library. Click the green flag to see them in action! Then try to create your own sprites using any of these methods!
Thank you to @algorithmar's project for the drawing of a mouse on a motorcycle. You can check out my video tutorials on different methods for creating sprites on the official Scratch YouTube channel (ScratchTeam; look for the "Create a Sprite with the Paint Editor," "Bring Your Drawings Into Scratch," and "Remix and Re-imagine Scratch Sprites" videos) and find a link to written resources related to this topic in the video description.