Blind & curtains rods installation

I have added a spread sheet showing all the details of the window measurement extra. I have already brought the blinds and rods. Need to install them. The blinds are to be cut down to size to fit inside the recess. Also there is a steel beam on top of the window frame, so need to drill atleast one hole in the steel beam to install the bracket for the curtain rods I have attached some pictures, but they were taken while the build was in progress but should give you a bit of idea. I am not too fussed about the timeframe but would like to get it done by 5th May or before. Note: Website does not allow spreadsheet as an attachment so have added a snapshot of the detail. Please see the last picture for details The roller blinds are able to be cut down to size, and full instructions on how it can be done would be in the package