Fiddly bits and
Mismatched shapes;
Come into my house,
Shut off the drapes.

I'll piece them together
This one and that.
But you don't believe in board games
So it's bound to fall flat.

So let us start from the beginning,
The corners and the bottoms;
Work inwards.
But do not be surprised
If you are not that missing piece,
But just a part of another's
Puzzle.