I've actually met with a lot of success using glue and such for curtains, esp when I don't want the stitching to show...its very strong...ive used it to attach braids to valances and such. When i was making the veil, i tested some glued on crystals and was amazed at their holding power. But the dry cleaners or a tailor is a good alternative. I've often wondered if you can rent a sewing machine...say like where they sell them or hold classes and pay by the hour or some such thing to use them...though I suppose buying a used machine can be cheaper. Or you can bug a friend who has a machine...

I don't think you can't beat JCPenney.

Break this down into two steps to make it easier. Tackle function first. Don't worry about a valance until after you live with the shade for a while. Get dressed and go to the stores and play with their displays. Find one that give you privacy, but also works with your fan. The valance is just fluff and you might decide that with your clean lines that you don't want one. The pleated shades that Daisy mentioned sounds just like what you need. Even a nice tailored pulldown sounds great with your Shaker-style furniture.

I would do soalr shades on the top windows to control heat and damaging UV rays and I would make those probably custom and permanent then the same for the lower windows but able to be rolled up on cloudy days the drapes as shown for a nice look IMO the windows do not lend themselves to sheers. BTW the solar shades allow you to keep the view and if you do not need privacy at night just leave the dapes open but always make the drapes be full enough to be able to close not just skimpy panels that really look cheap. No lights are needed there and if you do not do the solar shades those floors and everything else you put in that space will fade .I also think that FP is too unassuming for the windows so I woiuld be looking at taking a nice porcelain large format tile to the ceiling with a nice thick mantel in a wood like the floor. BTW drapes near a FP are never good so maybe just romans shades in the same fabric as the drapes for those windows and please do not put the TV above the FP. I would also close the passthrough it will give you a nice wall for a TV , storage,display arrangement I deally in a wood like the mantel