If doing a whole house use a specialised curtain shop, they are really helpful, will show you all the options and you can take swatches of fabric home. I personally would not use same curtain in every room. Use block outs in bedrooms or rooms that get afternoon sun. Lighter fabrics or sheers where only need minimal privacy etc. curtains can be hugely expensive, good luck

I agree with jmm1837 about the lounge, but I think it might be the hide throw cushions that makes visualisation harder - maybe think about saving those for a different look. Perhaps have the room an ecclectic mix rather than one specific style. Think about light sandy beige (not cream) walls, lighter timber floors, the odd piece of furniture in a lighter timber or that's been limed or even glass topped to keep the room feeling open. Using furniture that has been lime washed and distressed can also work. Because your cowhide sofa's are statement pieces, think about bringing in the beach feel with colour rather than specific objects. You could try using really large abstract art pieces (eg. if it's over a buffet then it have it the width of the buffet, if it's a bare wall then try to use up all the space either using a singe canvas or a triptych) that use beach colours you want to incorporate . Echo the colours of that artwork and even a bit brighter or paler but in the same colour family in your accessories and soft furnishings. You could also incorporate lamps that are glass/beaten silver/rope bases and light coloured lampshades. You might also want to think about a really large fluffy area rug in a light neutral/sandy colour under a glass low coffee table for the middle of your sofa area. On that table you could then feature beachy accessories such as a bowl of shells, a piece of driftwood or low piece of art such as metal fish or a ceramic starfish etc. just keep it simple so it doesn't look kitsch Burlap is great but it can be hard on your hands and sewing machine if your making curtains yourself and doesn't block out light unless your using backing - unbleached calico that is rubber backed is an alternative for privacy if you decide that dealing with miles of prickly burlap is not what you want to do - keep the burlap/calico to give you more privacy as pull across curtains using them to dress the walls on the sides of your windows (makes them look bigger) using a second curtain rod, and use your sheer curtains to give you a beaufiful breezy feel on a more discrete rod (you can even use a curtain wire kit if you're not going to draw the sheers aside). To keep your casual beachy feel think about using large curtain rings on a rod for easy sliding or big eyelets on a chunky rod with distinctive finials Good luck with your project!

My advice would be to get rid of the blind as you won't use it once you have the curtains - perhaps you could use it elsewhere or have it as a spare. You would probably find that without the blind you will use the access more often. I would do full height and full width drapes - an inverted pleat is attractive with heavier fabrics but if you have the light fabric on the top keep it simple. How about putting your sheer lighter drape on the side closest to the bedroom and have the blackout lining behind. This gives softer look in your room. You would probably find that without the blind you will use the access more often. If there is a lot of sun take care with the pure linen cotton and natural fibres as they will rot with light and sun. There are many synthetic linen look alternatives that are less expensive, last longer and have the same look. I feel your room could do with some texture - you could possibly have a subtle self coloured stripe in the drape - or go plain and have the interest in your bedding. If you want to go soft grey drapes I would go for a darker charcocal or midnight blue/ teal colour on your walls which would look awesome with a soft grey linen look curtain and natural bedding. You could introduce soft mustard, peachy pinks and soft apple green linens in your bed cushions.

what a lovely room which needs to look the way that makes you happy but you may find that the shutters also get in the way when opened..i wonder how venetians fixed inside the window reveals and directly to the doors would suit? Sheers are gorgeous but i agree the curtain pole doesn't look right: the sheer curtain tops should cover the pole (depending on the track this may only need a different hook to hold the pleats up higher) and as you need something that can be pushed completely out of the way a different pole with proper drawstrings with the curtains tops covering the poles may be the answer: a chat with a specialist who does shutters as well curtains (Spotlight?) should help but i hope you keep the sheers