Roll-up blinds let you open them to let light in or pull them down for privacy. Commercially made blinds are usually pretty simple to find, but don't offer much in terms of design. You can make your own blinds by replacing the material in a pre-made blind with the fabric of your choice or by purchasing a roll-up blind kit. Most of the work with making your own roll-up blinds comes from figuring out how to assemble the blind kit.
Measure the width of the window from inside the window frame. Also measure the window's height from where the blind will hang to the top of the sill.
Cut a panel of fabric. The fabric will be the width of the window plus 7.5 cm (3 inches) wide. Its length will be the height of the window plus 30 cm (12 inches). Cut a panel of fusible interfacing to the same dimensions.
Place the fusible interfacing on the ironing board, sticky-side up. Place the fabric on top, right-side up. Iron the interfacing to the fabric. Its polyester or wool setting is ideal, and anything hotter may damage the interfacing. The interfacing must fuse to the fabric completely.
Fold the bottom of the fabric and interfacing up 1.2 cm (1/2 inch). You want to fold the fabric toward the interfacing side. Fold up another 3.7 cm (1 1/2 inches) and pin. Sew along the edge to make a pocket for the wooden batten. Slide the batten or dowel into the pocket.
Apply the seam sealant to the fabric, 3.7 cm (1 1/2 inches) in from each side. Let the sealant dry for several hours, then carefully trim the extra 3.7 cm (1 1/2 inches) of fabric from each side. You can use scissors to trim, but a craft knife or rotary cutter and ruler may give you a straighter cut.
Spray the adhesive onto the back of the fabric panel, 1.2 cm (1/2 inch) away from the top edge. You can also use double-sided tape. Place a strip of tape across the width of the fabric, 1.2 cm (1/2 inch) from the top edge.
Take apart the old blind if you are using one. Place the roller from the centre of the blind or from the blind kit on the part of the fabric with the adhesive or double-sided tape.
Hand-roll the fabric around the roller. Go in the direction of the pulley, or you won't be able to roll the blind up or down. Roll the blind up and down a few times to get it adjusted properly. Mount the blind brackets in the window, and snap the roller in place.