gather up all your materials.

measure the length of your cupboard.

then cut the cardboard to the measurements.

then put the cut cardboard to one side.

then measure the width of the cupboard
and cut your cardboard to the measurements, this will be your shelves so make as many as you need.

now this is the slightly tricky part

measure where you want to put the shelves in your upright support ( the big bit of cardboard that you cut earlier )

and cut notches half way in to the upright support. ( one notch for each shelf)

cut a notch half way into the shelf do this for each shelf

then slot the shelf into the notch in the upright

(you can use a glue gun to make it more secure if you want but you dont need to )

then fill your shelves !!!!!!!!!!!