The base gradient is made with piCture pOlish Instinct & Tiffany. Pretty much every gradient works the same way. I've made a tutorial tackling all the big (and small) issues when it comes to perfecting your gradients.
The design is painted with acrylic paint and my Roubloff 00 detail brush. I used real tiny sea shells that I found in the craft room, my grandma used to have them for her dollhouses.
In the video tutorial, you'll see me using a tiny power tool. It's my handheld Dremel tool, I can switch out the tools at the top for different functions. No worry, I've never hurt myself while working with it!
Music "B-Roll" by Kevin MacLeod
Available on http://incompetech.com