Before replacing your curtains as this can be quite expensive for such a large window, if they are in good condition, add a band of extra fabric to the bottom in what ever suits you, your existing curtain track can then be moved up to the ceiling for good looking full length curtains without the large round eyelets, could save you a lot of money, I would look at replacing/removing the sheers cheers

Hi, Pin down a builder? I would suggest you take the plans you have to a builder and get some feedback before you go much further. Builders are often your best ally when it comes to practical ways to achieve the design intent.... many is the time we have been asked to price a set of plans where the client has invested an inordinate amount of time and money on detail only to receive a rude shock when the reality hits the budget for all the detail desired.... cheers

En-suite layout is fine, Looks like you have a double hung window with a slightly lower sill to the vanity height. . I’d put a stool in front next to shower screen. Update vanity and top and splash back, maybe lowering mirror. Could put a niche in the side wall if want extra storage. Could change mirror to a cabinet, even if it protrudes, mine does, A smaller basin would increase spaciousness and bench space. Can also increase depth of vanity, to 550. Replace floor tiles if you want but I’d leave shower if you want to keep costs down. otherwise retile to full wall height will improve look. Could add a pendant light over left side of vanity

the top of a vanity could be 780 (approx desk or table top height is around 750) or as high as 900 which is average kitchen cabinet height but is it for tall people, short people or average sized people and, as the space under the vanity is not tall enough for anything but dust and lost pills why not make sure the tops of the sinks is no higher than 900 for comfortable height for most people and that would make the floor space 220, the counter top 760 and the top of the basins 900?