The materials you need are:
-mini blinds to fit your window.
-fabric slightly wider and longer than your blinds.
-Fabric glue. The tutorial says not to use hot glue. I'm not sure why, but I was scared away from the hot glue so I bought fabric glue.
- A tape measure
-A flat head screwdriver may be needed
My window is a goofy size, 47" wide. I finally found blinds that size at Lowe's for only $11. I used 54" decorator fabric from Joann's. It was originally around $25 a yard (yikes!), but I ended up getting it for under $6 a yard on clearance combined with an additonal sale on clearance fabric combined with an extra discount coupon for 10% off everything. I used about a yard and a half for my window which is 45" tall. I wish now that I had bought more of the fabric because I ended up liking it so much!
First begin by lowering the blinds all the way and laying them out flat.
Next you want to cut all the little, thin tilt strings around each blind slat. My wide blinds had 5 sets of these. I was able to run scissors along them and cut them pretty quickly because they are so thin. Do not cut the thicker, lift strings! You will need these for the blinds to work.
After cutting all the tilt strings, remove them and the strings that the tilt strings are attached too. Again, do not cut the larger lift strings. You should only have the thicker lift strings left. Then you want to pop off the little plastic circles at the bottom in order to get out the end of the lift strings, unknot them, and pull off the bottom thicker slat. Save this piece, you will need it again.
Remove and discard all the other slats, leaving only those left that you want to use for the folds in your shade. I decided to only use 3 middle slats because my window is not very tall. Therefore, my shade will have 3 folds in it spaced slightly over 11" apart. If you have a taller window, or want your folds smaller and closer together, than you would leave more slats left on the strings.
You should end up with something like this. Again,I left only three slats on the strings for mine.
Use the tape measure to line up your slats so they are evenly spaced. Mine are spaced just over 11" because 11" x 4 spaced=44" and I wanted my shade right around 45" tall. You will want to cut your lift strings down to only a few inches longer than the length you want your shade to be. Your shade should be about the length of your window or slightly longer. Reinstall the bottom, thicker slat piece.
Now you are ready for your fabric. Lay out the fabric face down and place your blinds on top. I put my blinds so the pull cord was facing up, but it probably doesn't really matter. Cut around the fabric, leaving a couple inches on each side.
Now it's time to glue. First fold over the top of the fabric so that you have a nice crisp seam and glue. Then glue the top of the blinds on top of this fabric. You want the crisp seam to line up with the top edge of the blinds. Do not glue the very ends (left and right side) to the fabric though, leave about 2"-3" loose and not attached to the top bar so that you can reinstall the blinds later. (See the tutorial at Little Green Notebook for more info. on the gluing process since I didn't take as many photos as I should have!)
Next glue your slats down to the fabric. I put them so that the rounded side was against the fabric so that the glue and the slats had the most contact with the fabric.
Then fold the sides in and glue those down. Finally, fold up the bottom and glue it to the bottom slat piece. I ran out of fabric glue so I did use hot glue on the very bottom piece. It worked fine. If you have a kitty to help you hold down the edges while gluing, that can be a help too. Or a hindrance when they try to eat the strings.
After letting everything dry for a few hours, you can install the blinds just like regular mini blinds. You then may want to use glue or double stick tape to attach the ends of the fabric to the mounting brackets on the ends of the blinds. (See the post on a Penny Saved for more detailed info on this part.)
Here's how my blinds look when they are completely down. (I made them a little bit short, oops!) You use the pull cord just like you would with the regular blinds to raise and lower the shade.
It probably sounds a bit complicated, but it only took me an hour or so and I love the result. I will be trying this in another room sometime soon.