Carolyn,
I am in awe at your talent with colored pencils! This is fantastic! And I agree, I don't think there is anything wrong with copying magazine pictures...it is great practice! That is how I found out I could draw, actually. In my Junior year in High School, my teacher gave us this assignment to draw a picture from a magazine. That started my love for drawing. I still have all those sketches I did. Anyway, you are really talented!