This is my first shot at a step by step so be gentle with me. Here's a little quickie that is relatively straight forward to tie and a useful fly to have in the fly-box.
Red brassie midge
Hook 16 - 20 grub/caddis hook (I've used a size 12 here to make it easier to see)
Thread - Black 8/0
Body - Red wire, small dia.
Thorax - peacock herl
Head - Gold bead to suit size of hook
Put bead onto hook and secure with thread turns, tie in red wire.
After tying in wire just after the bead cover it with tight thread turns down to past hook bend, try to keep the wire on the top of the hook.
Take thread back up to behind bead with tight turns forming taper to body. Wrap wire up hook shank with tight turns up to thread and tie in with thread.
Tie in peacock herl behind bead and wrap with thread up to wire, wrap herl around the thread and wrap with tight turns to form thorax and then tie off. If desired wrap 2 or 3 more turns of thread around herl for extra hold.
Finish off with a whip finish behind bead.
Happy tying
Mark