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TanCalGal Pleats? sometimes the guys hang the drapes, arrange pleats and tie them loosely in the open position for a few days. Sometimes they use weights on the hem.
Bland? Add trim to bland panels.
Chair? Could not find: similar to Eames

JMittman Designs Are you referring to ready made curtains? You will almost never get the same effect of custom made drapery with store bought for many reasons. Custom made curtains are made with decorator fabric--usually with more body than what you will find with ready mades. The linings will be thicker, and many custom treatments have interlining--another layer of lining similar to flannel for even more body. Custom treatments will almost always have fuller pleats than you will find in ready mades. The fuller pleats mean there is more fabric in the pleat, which means the fabric will hold the pleat further down the panel. I would say fullness is probably the biggest factor you are missing in ready mades. That said, there are just some fabrics that will not behave correctly in curtains panels due to fabric content. :(

Judith Taylor Designs Well said JMittman. You covered it all. The only thing I can add is that window covering professional sometimes "book" the drapes. It is a process of laying out the folds (like pages of a book) and then wrapping the panels so they hang with the folds held in place by bands until they naturally fall the way they are intended.

Maria Billingsley of J Hettinger Interiors This is a ripple fold treatment. The best way to have it not flare is a light weight fabric 118" goods so no seams and has a lead, metal, hem to keep it straight. It was very popular when this type of drape was common in the 70's.Now this art has been lost.

Cheery Curtains Hi, Cheery Curtains has lots of nice curtains you may like, and here are some. Lots of colors, lots of patterns, perfect tailoring, and the best possible prices.

For more designs, welcome to my Houzz page!

bodhidesigns With the curtains fully open (i.e., stacked at the window edges), try "pressing" each pleat between your index and middle fingers and then setting them with large-ish sewing pins (near the hem) as you go; then tie a couple of long ribbons of rag around the opened curtains 1/3 and 2/3's of the way down for a week or two, just tight enough to hold them how you want them. That's what mother did, and her curtains are always crisp.

AMN If you don't mind me asking, in what city are you located?

For the chair, I recommend you find a high-end modern furnishings store (Miami has Luminaire, Atlanta has/had Space, NYC had Moss, etc.). Also check Ligne-Roset stores. I swear I've seen that chair or something very similar at Luminaire in Miami.

Al Omra Hi All, Thanks for the great reply. I think collectively you all have provided great tips into getting the perfect pleats . and surely I will try pressing the pleats into a book fold and keeping them loosely tied for few days .

I went through architonic and 1stdibs and most likely a chair like this could be vintage.

Thanks all for your tips and advise once again