Click "See Inside" and edit the green string block with the pixel input. You can set it to what ever you want and whatever you drew will pop up when you press the green flag. Repeat this process for every sprite and you'll get a whole bunch of pixel art.
"NO WAY I MADE IT FIRST TRY LET'S GOOOOOOOO!!!" -deadread after finishing this project in 3-5 minutes Check out my dungeon maker. It's so much better.