All sounds good to meI love inverted boxpleat. Would suggest you stick with pleats for your main curtains but try not to get too busy with the sheers and keep them plain if possible. Examples of what you are thinking about would hel;p

Hi, love that you love bold colors and patterns. I think a rug that will help to highlight what you've started in your space without competing with it would be beautiful. Because most of your patterns are medium to large in size, I would probably recommend a rug that has some black in it and even with a pattern but with a different scale pattern (much larger or smaller/more subtle) than what is shown in your pillows, chair and lamp. Here are some examples.... Mostly of rooms with bolder (black and white) patterns and the rugs that were used with them. In pic 3, a rug with a larger scale pattern was used in combination with pillows, drapes with smaller or no pattern (and with black/white contrasts). Your space would be the reverse application I think....like in pic 4. I also love the idea of a bolder, more contrasting in color (like the colors of your pillows, etc.) of a cowhide rug. Perhaps even a hair on hide rug.

There are some great comment here, but my take on this would be if you are going custom to take your time and look around. Many designers offer different takes on each person's preference. The colours you have are good but I'd personally would opt for a more warmer cream, with a self print pattern. I would also suggest pinch pleated curtains and not pencil pleat as you have currently, pinch pleated curtains will give you uniformed pleats from top to bottom. In addition to this I would suggest you use blackout linen to prevent light to enter the room, and possibly interlining so that you retain some thermal properties in your fixtures. Having custom made curtains are a lifetime choice for most customers, take your time and don't settle for the first company you come across. The space above your bed i would possibly add a sheer fabric roman blind which is slightly see through but enough to give you privacy if you bedroom is situated on the ground floor. You can also get the a roman blind to match your new curtains if you'd like a more repetitive theme in your bedroom. I would suggest if you do opt for a roman blind, and you are looking for a good qualities add blackout linen. If you would like a rough estimation on what you would be looking at we can assist you so you are aware of what most reputable curtain making specialist charge in this current market.

Hi - sorry for my ignorance. What's a curtain waterfall? Like this?