of the side pieces (using the side pockets on the trim pieces). the trim piece will be be attached flush with the square cut out to make the “l”. again i placed this trim pieces 1/4″ away from the from edge of the side pieces. tip: make sure the other pockets are facing the right way at attach the bottom step.
once this pieces were attached, i placed the bottom step onto the frame. making sure the step was flush with the side board, i then marked where the bottom of the step hit the side board. i did this for both sides. this line is where you will place the 