you'll need to get some (pine) branches. you can get these at place you get x-mas trees.ask if you can have some (scrap) branches. you might find some rope which you'll need. if you cant get some rope then find some or ask. you'll also need scissors and a saw.
the more branches you have the bigger it gets.
Step 2: Trimming
use the saw to trim the extra branches. tip:bend the branch and cut in the middle where it bends.
trim some of the extra off.
Step 3: Tying
gather the branches( the ones on the branch) and tie them together.
Step 4: Puting togather
take one branch(Y) and stick it into the other branch(X) until THE stem of branch(Y) goes past the tied rope of branch(X).repeat.
Step 5: Final touches
take the scrapes and use them to cover brown spots. if you need to make extra ties to hold in the branches and scrapes you may.