it's okay! ;v; dont worry about your english. it's okay.
I use Paint Tool Sai ([link] ) to make my pixels, as well as my normal art. You can also use Adobe Photoshop, MS Paint, etc! A lot of possibilities. Most computers come with a free program like MS Paint. What program do you use for your drawings? You may be able to make pixels in it. However, I'm not sure if you'll be able to animate, like making the eyes blink.