Knex Boom Cannon

yesterday I couldn't think of any thing to build after a while I came up with a boom cannon from the game boom beach.

Step 1: The Barrel

Step 2: Build the Shield

Step 3: Connect the Barrel to the Shield

Step 4: Make the Back of It

Step 5: Build This

Step 6: Connect It to the Barrel and Shield

Step 7: Build the Stand

Step 8: Connect the Stand

Step 9: Add These Pieces on Both Sides

if you build this post a picture in the comments.