Read the instructions provided with the kit. Become familiar with
the steps of assembly, but by no means follow them exactly. Sometimes
there are other ways of assembling the house that will work better for
you. For example, when I assembled the dormer, I attached it to the
roof before the roof was attached to the house. I could see no other
way of clamping the dormer while the glue dried.
If you have misplaced the instructions, most companies who make the
kit will be happy to send you replacement instructions.
Greenleaf has a webpage,
www.greenleafdollhouses.com
which had address information and how to contact Greenleaf.