lines first before i cut the house out. to score, i use the back of the craft knife to make a fairly sharp line without cutting through the cardboard. then i cut out the house with my metal ruler and a craft knife.
now i cut out windows and doors where i plan to have light shining through.
if i glue a solid piece of cardboard on the front like i did in the this little house, i don’t usually cut out a door piece. if i want to put a vintage door glued to the back of the house, then obviously i do cut out a door. again, the goal is 