and make it with Photoshop. 
I don't want E-mail from lawyers--please obviously transform your image! 
 After you open Photoshop, click 
File-->New.
Most of my logos are 600 x 300 pixels; if you choose to make it taller, I don't think it will be a problem until it's over 600 pixels. 
When you're done, save it as a PNG file with your first name and last name, like this: