First things first - on your painter's canvas, lay out your seashells to get the Christmas tree pattern look. Arrange them until you are satisfied with how they lay on the canvas. Your seashell design should look like a pyramid/triangle.
The next step is only for the ADULTS to handle. Get the glue gun hot and ready.
Go ahead and hot glue the shells, onto the canvas, in the design you just made.
When done attaching the seashells to the canvas, let the hot glue dry completely before moving on.
To finish the project - paint your tree and add some embellishments to really make it stand out for Christmas.
Don't forget to add a star on the top and some brown on the bottom for the stem.
Now display your seashell Christmas tree decor piece proudly for ALL to see!