Let your imagination go wild! :p
Oh,well,i haven't shown my imagination much,but it's what i made!
I will be glad to see your versions of painted sea shells!
Just paint them with markers(let dry) and then add a coat of invisible nail polish on them(let dry).I used one with sparkles in it!^^
aneniine posted this project as a creation without steps
Here are some similar tutorials to help you make this one!