Our company had a Masquerade-themed Christmas party last year so I made myself one to attend with. I got inspiration from all-over the internet and compiled them on my Pinterest.
I got a bare mask and painted it silver, gathered some "beach"-y stuff and just glued them on. Most of the stuff here are from my scrapbook stash.
As you can see I tucked in some shells, starfish and even corals to stay true with my theme.