this is my Titanium Wing Stove setup. I double or triple layer some aluminum foil folded to the desired height and stapled into a cylinder.
Hmmm.... Seeing HJ's screen above, I need to try a smaller and taller cylinder, with a small slot for the cup handles.
Generally, the higher the windscreen extends up the side of the pot the better. Yours really does look too low. You want to shoot for getting the windscreen on a set up like yours at least 3/4 of the way up the sides of the pot.
HJ