Looking at the first below I'd say, to be on the safe side, the bedhead should show half to three quarters above your tallest pillow. The second photo I believe shows too much bedhead.

Hi Northstar Lovely table you have chosen Remember there needs to be at least 1m for chairs to be moved out from the table Also food placed in the centre has to be reachable!! so don't go too wide If you think the table is out of proportion, a rug underneath can give the illusion you want enjoy - will you have the table for Christmas?

Hi, I'd go for a black balcony to tie in your awesome black theme. Perhaps something with space for some plants to brighten the overall appearance of the house? What is the reason you want a Juliet balcony? Do those windows open right up and you need them for safety reasons? I love the overall facade, and apart from some landscaping and removing those external blinds - I'd leave it as is. Good luck

The furniture will not make any difference to a real estate appraisal. They will be looking at market suburb history. The size of the rooms, the kitchen and available bathrooms and their condition. A real estate person can look at an unfurnished home and evaluate correctly. If you are going to sell, then neutral colours are best when you have home opens.