I made this card to wish a friend good luck in their new job. The letters are stickers that I have had for years! I stuck them onto randomly shaped pieces of blue card and mounted three of these on black (all card from Craftwork Cards).
The scan doesn't show this but the plain blue pieces are attached with a glue pen so are flat, but the ones with the black edge are mounted on foam pads to add dimension.
The stars and circles are punched and I used to foam pads to stick the buttons on.