I would start by looking at colours you love. Plants and greenery is not everyones taste, but it may be yours. You can put it in a vase, basket or something that adds texture and also keep in mind the size needed for the overall picture. It is better to choose things you can easily move if and when the time comes, so heavy earth filled ones will perhaps cause you some issues if moving on your own or if you have a rental with stairs. Getting back to colours - if you want a neutral colour scheme then make that the foundation you start with (like a blank canvas). In the photo, your room appears to have a neutral colour scheme at present for your bed, cushions, carpet etc. You can make it warm and cozy with contrasting cushions, throw, or plants but this is not necessary if you want to stick to all neutrals. Neutral colours generally have warmth added with shades of darker colours that enhance or act as contrast. These can be variations of one colour, picking up a flow that is good to the eye. Brown can be the contrast if you choose or you could have another choice that adds just that bit of dark and light. You may want to choose items that bring in texture as well as colour contrast. Pick out the colour of your accessories (wall art, flowers, candles or what you like) and have them work with, instead of being totally alienated from the whole. Drapes/curtains/blinds generally come with the rental property, so if these are neutral in colour, they should work with other colours you choose. If you are looking for warmth, choose warm colours; if cool, then choose cool colours for bed linen etc. Warm colours generally go with warm colours and cool colours with cool ones. Often they do not mix. As mentioned previously the same colour can be used but perhaps different shades, to produce light and dark. Tidiness is a habit we all would like to adopt, not always easy if you lead a busy life, but when time permits, put things away that need to be and it will make the whole picture also a bit clearer for you to work out what you want to create. Going to shop displays or searching the internet for ideas is also a great help. Often one can immediately say you like something or you don't. By doing this you will learn what your taste is and work along those lines. Photos are an excellent help to yourself as well as to shop assistants who are ready to advise what may work. Let us know how you get on and would love a photo too.

Makes all the difference. Those white ones are so pretty.

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

Maybe you can use motorised roller blind that is hung high up under cornice and when not in use just let it hag just to about window frame . It would make your room taller and you cam match fabric to your other blind. I am suggesting motorised because it’s a pain piling the blinds up and if you are not on the sunny side you can use light filtering fabric instead blockout, it’s much lighter in weight.