Maybe a bit basic for most but here goes.
Black SpiderHook: Wet fly 12-16, in this case a Kamasan B170
Body: Black tying thread
Hackle: Black hen
1) Place the hook in the vice
2)Catch on the thread, take several touching turns towards the bend and snip off waste
3) Wind the thread, in touching turns to a point approximately above the barb then back to about 2-3mm from the eye
4) Select an appropriate hen hackle with fibres which reach approximately to the hook barb when wound. Strip the flue away from both sides of the hackle.
5) Then pull the fibres at the front of the hackle forward and offer up the hackle to the hook
6) Pinch and loop the hackle onto the hook
7) Secure with three or four wraps then cut away waste hackle.
8) Trap hackle stalk in pliers
9) Stroke the fibres back
10) Then wind one turn of hackle
11) Repeat step 9) & 10) twice more, secure the hackle & snip waste
12) Form a neat head & whip finish
Et Voila the black spider, the simplest of flies but deadly on any water.
Cheers
Peter