On the 4th episode of this series I will show you the difference between the canvas size and image size. You will see how changing the canvas size you will not affect the contents of your layers. This is just for beginners.
Hello, my name is Andrei, I was born in 1988 and I'm a self taught graphic artist (I don't consider myself an artist though, I'll have to check for the definition of that). I write Photoshop tutorials about all the techniques I know and I also provide my brushes and also stock images and other resources. I hope you like my site.