I am not a fan of wood kits, but it sounds to me as if the cardstock is to be used in conjunction with the wood siding. The cardstock is likely for sub-walls, with the printed guide lines to aid in installation of the wood for the finished outside walls. The instructions should tell you whether the wood is to be applied to the cardstock first or if the cardstock is to be assembled into a sub-structure, with the wood applied later.
Wayne
OK so I went out on a limb, spent $17 on a small laser cut wood shack kit because I wanted to see what wood kits are all about. I've opened the package, poked around and from what I see it seems straight forward and simple enough. However I have one question that may be hard for you folks to understand but I am going to throw it out there anyways...
So this kit came with either super thin white wood or cardstock that has siding lines printed on it for realism on the shack. However, this white material has these very fine but decently long and definitly noticable grey wood fibres so the white isnt a pure white but has these unrealistic looking grey fibres. I tried taking a picture but the fibres do not show up on my camera.
My question to you is this: Should I paint over this and get rid of the siding lines or is this just an issue inherant with wood kit models and I should leave it as it gives the building a bit of a 'dirtier' look when viewed from more than a coupel feet away? Or perhaps theres a way to cover up these fibres? Any and all suggestions would be most welcomed!