What I found hard
I found editing an extremely hard art to master. The main thing I found challenging was to sync the images with the audio. I wanted to mix the main chorus of the song with the main action in the images. I found this challenging as you had to cut the images and this made the clip shorter which I didn't want. Another thing I found challenging was to get rid of the black shots that kept cutting through the images.
What I found easy
The main thing I found easy was to gently fade the images from one to another by adding effects in at the start of the images and at the end of them.