One leaf, four backgrounds

I've been playing around with different coloured backgrounds for the course I'm doing.

I had problems getting all the sizes and spaces identical, so if anyone has any hints on this, I'd be very grateful - thanks!

Edit: Sonata Lover has been an absolute star today in helping me with this, as I'd managed to lose the exif data AND left a border on the original version so it didn't get accepted. But Larry came to the rescue with easy-to-follow directions on how to create a good collage - very many thanks, Larry.