What I did was use the width 54inches and cut in half to make two panels. My windows are narrow and I wanted less bunchy fabric on each side. Otherwise, it would have cost double that, but that would still be better than paying someone over a thousand dollars to make.
Here is the link I followed on Pinterest (Click her for link on Pinterest for Step by Step) and my pics to go along with it - step by step. She has the BEST instructions EVER! If I can follow them, you can too. Just take your time and when she says to iron the hems, please do this! That is what saved me.
Once I had these cut, I took each one and ironed the hems down like she said. See my ironing board in the back, so I really did do it! :)
Then, you place your backing fabric under the hems and I cut it. She used a sheet, but I needed much longer, so I bought thin backing fabric. This part was easy too.
It was really hard to get a good view of them hanging. But, you can see how long they are.
Tell me what you think. Also, if you want to try them, please refer to the link above, she is fantastic with her instructions! Good Luck!