Would you like some helpful criticism? Otherwise please ignore my post.
You should have asked before! Your work looks nice form the handling point of view, but I assume you want to build a correct model if I look at the rest.
Your type of rigging is wrong, as there are no ropes and turnbuckles used for the wing rigging, see all the blue lines in the WNW manual. WNW stated a size of 0.1x0.3mm because those lines are
RAF wires.
That was typical for many of the British aircraft types of WWI. These were flat forged steel bars produced in specific length sitting in specific mounting points on both ends, here are the result of a quick search in the net:

Edit: if you don't see the pics in some browsers like Chrome (because of no http embedding in a https page) here are the links:
http://ipmsvagabonds.com/page2/page36/files/raf-wire-terminal.jpghttp://ipmsvagabonds.com/page2/page36/files/flying-wire-terminals.jpgThe pictures are small but you see clearly the aerodynamic profile so you see why WNW says 0.1x0.3mm.This is not a D.H.2 but the rigging type is the same.
There was plans with the exact length, here fro example for the SE.5a:

In scale 1/32 there are some fine solutions available, in my opinion the best was RB production. Really pity that Radu sold his business and the new owners shut it down at the moment (the web site is dead), I don't know about the future.
In my 1/48 scale it is harder, but I used a PE set from Part for my D.H.2.
Cheers,
Frank