All students need to be able to tie their own Obi (belt). It is a requirement for your Blue Belt and will be reinforced in class.
Learn to tie it on your own!
1) Hold Obi in front of you with any stripes on the right side.
2) Wrap the Obi around your waist. Wrap the Obi around your back and cross it over itself.
3) Bring the two ends of Obi evenly out to the front.
4) Bring end in your right hand across to the left side.
5) Bring the end in your left hand across to the right side and hold the obi with your left hand.
6) Bring the end on the right side up under the two pieces held in your left hand and back to your right side.
7) Cross the tow pieces of the belt by taking the right end above and to the left side as you bring the left end under and across to the right.
8) Bring the right end up and over the left piece and down through the hole made by crossing the pieces.
9) Grab both ends/sides of the Obi (belt).
10) Finish by pulling both ends of the Obi tight, also pull the ends downward.
11) Finished Belt, stripes on the left side.
This description with images can be downloaded here.