This project can vary between 30mins - 1 hour depeding on the size of the paper.
I found that overlapping works well. I would also recommend to stick to 1 theme as it is easier to choose images
Get some magazines
Go through the mag and cut out images to go with your theme
Glue the images down and try differnt effects
Flick it with paint and add some embelishments
Ta da you have a really cool collage!
If you have any questions send me a message or comment on my profile and i will be happy to help you