Spaceagent -9 was kind enough to send his D7 design and (as requested) I'm going to build a standard version using his template and my own variation with layered elements. I printed eight copies of Spaceagent's design on one A4 sheet, so hopefully one will suffice for the standard build and the other seven should surely be enough for a layered version.
First up is the standard version:-
I started with the parts that I was certain of, ie the wings, and worked from there trying to figure out which part should go where. In retrospect I should probably have checked some orthographics, but my internet connection has been dodgy (to say the least!) for a few days.
The nacelles went together slightly asymmetrically, but in my opinion this looks quite good when they are attached to the struts. I know that I've placed the smaller pieces in the wrong position - the reference I had available was a similar model which had some very obvious mistakes on it :-( - I placed the squares at the front and used the irregular shaped pieces to form the rear of the nacelles, but I realise that the irregular shaped parts should be folded around the front. This will be remedied in the layered version.
The box on top of the wings - yes, I know; very technical term! ;-) - went on next, and I think I've identified all the parts for it correctly. There is a blue bar which can be placed on the front which I've omitted to give a bit of variety.
I used a cocktail stick to curve the neck and trimmed the side struts to get them flush with the front of the wing structure.
This is where I hit a big snag. The bulb required a lot of reworking - when I had put it together it was twice the size necessary for the rest of the bridge. I had to savagely trim the back and remove large chunks from the top to get it in proportion to the rest of the ship and give it a shape I was satisfied with. It might have been a better idea to remove the tabs and join the bulb pieces with strips of paper glued to the inside, but I did achieve a size and shape which I'm happy with. It's not shown in the next photo, but it will be when I photograph both builds mounted and side by side.
At the end I was left with a handful of pieces which I have no idea of where to put and a few others which I felt were redundant at this scale. Now that I can get back online I'll find some more reference pics and see if I can work out where the mystery pieces go. In the meantime I have a nice teeny, wee D7 measuring approximately 2" long 
First up is the standard version:-
Some trimming on the front and back pieces was required to get all the edges flush and leave a space for the struts to be attached. The symbols had to be cut with a modelling knife as they were too small even for my mini scissors.