Something I haven't mentioned yet is the presence of the 'FX' logo on the sticker itself. I think this important as it adds a sense of credibility to the products. It will also add a sense of continuity across the range of products I am able to come up with and make them easily recognizable as a set.
I then applied the sticker in various different positions all over the front cover designs I have proposed. The flip book below shows the range of different options I was able to generate, and how the yellow and blue colour scheme works well together.