Max,

Good topic. However,if you are limited to 4-5 minutes you may not get done within the alloted time. Might I suggest you do away with the actual tying but show the fly in each of the several stages of completion and describe what you did to get that step completed. For example, a hook in step 1 would be the hook with thread wrapped along the shank. For step 2, the hook would have the tail tied in. Hook 3 (step 3) would have the tail, the rib and the body tied in. Hook 4 (step 4) would have the tail, body and wrapped hackle tied in and the ribbing wrapped to the head. Step 5 (hook 5) would be the completed fly with a nicely finished lacquered head. I'd also suggest using easily seen colors and make sure you have a good background so your audiance can easily see the fly.

Good luck.

Allan