I use fotoflexer. It's free to use. I never even bothered to create an account and I
can still use it. I just click on the website below. First page I click on upload
photo at the top right hand side of page. Second page click Upload then choose where on your computer
you want to upload pic from. After pic comes up click on decorate then click on text. From there
choose the comic bubble , size, text you want to use, etc...
I do not know how to create a comic strip though but I've never tried yet... lol
http://fotoflexer.com>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>