this took forever to do I'm extremely sorry. I can remove the background and turn it to white, but I have no knowledge on how to make it transparent, so you'll have to do that.
To make an oekaki image transparent, you have to have no background layer active. Then, copy the image url. Near the end, there will be a bit that says auto&rev and you need to change this. Change to auto to png. Once it says png&rev instead of auto&rev it will be transparent.
Hi hi! Name's Clover, she/they pronouns. I love trading and am currently trying to collect every pet on the site, so feel free to send me random trades! Pretty much everything you need to know about trades with me is covered in that one statement, but linked below is my trade thread that goes a bit more in depth :3