Piskel is an online based drawing app that is great for making ‘Pixel’ sprites
Setting up the Document Size
Drawing Tools
Copying and Pasting
Creating Sprite Sheets
Saving and Exporting
Experiment with the tool and turn it in here
EXPORT as PNG
If you love PIXEL art, and want a more stable app, you can use LIBRE SPRITE, which is included as download link below
Piskel Link
https://www.piskelapp.com/kids
Libresprite Download Links