Image Generators

I have tried You as a South Park Character, and You as a Simpsons Character, it was fun to create the characters as I like. But to save the image was really hard. I have followed instructions, it didn’t work, so I save the screen to word then print it, scan it, cut out the part I like then save it as an image. Did the homework—to put the images on my blog, but how about copyright issue? Is it OK to post them on my blog?