Here is a brief steps: Choose a piece of fabric of your choice, be sure the measure the length beforehand. Lay window blinds flat on the floor. Cut all of the ladder strings located on both sides of the blinds with scissors. Separate a few of the slats ensuring there’s enough to cover the window entirely with each slat about seven inches apart.
Spread out the remaining slats that you set aside on top of the fabric. Fold all of the fabric’s edges around the slats, using the mod podge to glue them. Secure the folded ends with a clothespin to keep the fabric from moving and wait till dry.
BHG Home demonstrates this beautiful roman shades in the video for more detailed instructions.