STEP 1 : Take a pair of matched wings and cut part of the feather away along the stem from roughly the same position on each feather.
Proportions are usually :- thickness of the wing = width of hook bend.
STEP 2 : Place both the feathers together and grip between the thumb and index finger. When the grip tension is released these should try and spread outwards. If they try to spread inwards then they are the wrong way round and need reversing.
STEP 3 : Measure the length of the feathers, these should be roughly the length of the hookshank from the tying in point on the hook.
STEP 4 : Hold the feathers with your left hand using the thumb and index finger at the exact position on them where you measured the tying in point.
STEP 5 : Pull the bobbin upwards and lay the thread in between the thumb and index finger.
STEP 6 : Now drop the thread back down the other side. (I 've let go of the tension on the thread so that you can see the loop). Make sure that the downward thread goes between the thumb and index finger again. We now need to repeat this procedure again. Make sure that the next up and downward movements of thread go between the thumb and index finger again but the thread this time needs to go in front of the previous loop.
STEP 7 : Still pinching the feathers, Pull the thread vertically. This will compress the feathers at the tiying in point.
STEP 8 : With the feathers compressed , perform a few more wraps of thread to secure the wing. Make sure these wraps are towards the eye and not backwards towardds the thumb and index finger.
STEP 9 : All that needs doing now is to trim the waste ends.
Step 10 : The finished wing.
Final : Here's an example of a Black Gnat with a Mallard Wing tied this way.