For the long board, I separated and labeled the major components that would go into it.

 

For the ukelele, I left out the side panels and only drew the front and back panels of the body. You can see the 3 major components of the ukelele and how they would be connected to each other so that you can fold it up and fit it into the hollow back.

 

For my vinyl cut sticker, I traced over an image I found online and made it into a vector format. The character is Appa, the flying bison from the animated series Avatar the Last Airbender. It takes up the large part of my phone case.