(sorry about the fuzzy picture)
This diamond fold card was fun to do. It really only took marking a few measurements and making a few folds. I don't have a score-pal so I used an acrylic ruler and an embossing tool to score the paper before I folded it. It worked just fine.
I've been looking for an excuse to use up a pack of black cardstock that I got a few months back so I paired it with the shiny gold cardstock and added gold peel-offs for the corner details. The sheet music sticker came as part of a larger set of musical stickers that I had here at the house and I don't remember where I got it. I also added white cardstock on the reverse side of the diamond to make it easier to personalize.
If you can measure and fold, you can make this card! Why not give it a try? The following link will take you to the You Tube tutorial: