Either use MS paint or some online software to help you.

I used Google Drawings when I used to make my Tumblr comps. It's kinda awkward but it works.

Thanks guys :) I sort of did an fs inspired project and want to share it! We will see how it turns out.

ooh, definitely post it when you finish! we can't wait :)

I use microsoft paint, and you see how awkward mine look.

If you're on mobile then you can use the ifunny app and make them on the comics section

*growling under breath* ifunny..

Thanks guys, I finally submitted it! It's not the best quality, but I don't know what I'm doing. Anyway, here it is http://funsubstance.com/fun/388305/fs-inspired-pillow-shirt-project-/?ref=submit