I for my part don't think that the Space Marine Land Speeder is worth it's point cost. But three or four of them in formation flight are ... quite impressive.

FILES 

Printing size of this file is 27,0 cm high and 19,0 cm width.
landsp1.gif, Land Speeder part 1 of 1, 48kb
The weapons are in a separate file (Size: 10,0 cm high, 10,0 cm width):
landsp2.gif, Land Speeder weapons, 15kb

INSTRUCTIONS 

Yup, I know that this tank is a little tricky. So have a look at the following drawings:

Do parts 1, 2 and part 3 (as main structure 1,5 to 2,0 mm thick), glue them together as shown in picture 1.

Next is all the structure indicated by big letters. Do these parts aprox. 0,5 to 0,8 mm thick and glue them as shown in picture 2.

Try some fine filler as used for car repair to fill the gaps between the edges of the structure.

The "wings", parts 7 and 10, are done as 1mm thick structure and attached slightly inclining on the sides and the bottom. Same with the defusor 6 (incl. structure 6a + 6b).

Parts 4 and 5 and the stand 9a + 9b are done as normal and glued on the top and bottom.

Do the additional structure L and 8a - 8d 0,5 to 0,8 mm thick.

Not shown in this sketch: the chairs in the cockpit and the engines on the backside (both done 0,8 mm thick).

At last create the weapons (use standard paper as they are really small, then add structure aprox. 0,5 mm thick). Create the barrels and muzzles by rolling a strip of normal paper around a ballpen cartridge or something similar, until it has the right diameter.