Step 1: The Body
Now, use a glue gun and and fuse the three strips together. Make sure to do this quickly as the glue dries extremely fast and could affect how well they attach together.
Step 2: The Axe Head
This is the more tricky part, cut out both of the axe heads and make them as similar to each other as you can! If you don't it'll look really awkward.
Now, glue gun one of the axe heads to the stem. Then glue the other on top of the other side, sandwiching the stem in the center by the axe heads. Wait for it to dry for about 20 minutes to be safe, before going on to Step 3.
Step 3: Making It Yours
But, if you want to make it like mine, I have the steps for you.
First, paint the axe head silver (I recommend acrylic paint) and the body (stem) black.
Second, using a template (sorry I don't have it for you but mostly this is up to you anyway.) Make the main decoration on both sides of the axe heads.
Lastly, Add the gems! you can find them in any craft store. Even create a cool design with swirls and add some glitter. I encourage you to make it yours!
And Presto! you have the Sister Axe!