COLOUR GROUP..

I found that grouping my layers by colour helped ALOT.. It made it easier to find the layer I wanted, as sometimes I found that I forgot to write what layer was what.. 

I also used the 'parenting' method we were shown by Mike.. this was REALLY useful, as my images were always moving together, but without the parenting, it would take AGES to get all the layers to move in the same place at the same time..