Drawing a background

When i was making my background in flash it was hard because i had to erase the object and draw it again.I made the background like a into a city it was big. But i messed up a few times on the background.I had fun drawing my background but i can't wait till its done.Drawing my background was a little hard because i want to get a picture in my head about the way it should look.It took me a long time to finish the background because i wanted it to look nice.When i was finally finish i checked over it and fixed anything i messed up on.