@crafter , I used the same video to make roman blinds,too....
Its a good video, as you say lots of hand sewing but you get a good finish from the front view too. Love the fabric you chose for your blinds and what a great window space, with a perfect solution, sectional blinds.....
However I now feel guilty...
....despite making blinds for my sons house .... I have still yet to make a blind for my own kitchen, that was newly fitted almost three years ago......
Time to get on with them, me thinks...