Masking troubles with origami stop motion

So, when we were taking photos for the origami stop motion, Alison hardcore derped and forgot to take another picture as the background for masking (double pictures). So I, Stella So had to improvise while masking (Alison helped a bit, she was doing other homework at the time =.="). I had to use two extra layers and use previous pictures to make it look the way it should. Its barely noticeable thanks to contrast and brightness tools and such :) GG Alison! We did good~ Alison taught me how to use Sony Vegas and how to mask <- THAT WAS DURING THE FIRST ONE, THE FISHY ONE. THE SUPER SHORT ONE. LOL. :D