The TJ way.
The whitish line is the fly line.
The bright yellow stuff is supposed to be your clear fly leader or tippet depending on what you are fishing for.
straighten line
Double back and form first loop.
Form 4 or 5 loops and keep pinching them
Slip tag back through all the loops.
Pull main leader until it stops while keeping knot pinched.
Pull leader tag until it stops while keeping knot pinched
You end up with this..
Snug the knot together neatly while pulling both ends of the leader and holding the flyline tight.
It will finish off nice and clean and you can trim it up. I thought I Was making a 4 turn but I must have been using 4 turns in the field when I did so. This comes out to 5 turns.
Takes a bit of practice but once you get it you wont lose it. It's all about finding your own trick to snug the knot down to where it comes out clean.