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Design and Style my New Bedroom

So we are moving houses in December before Christmas time in a newly build house. Its not urgent especially that they are still building the house (almost done). The room is small. My vision for the room is for it to have a minimalistic and simplistic design but classy and sleek looking with colors of grey(wash)(don't know what colors go well with the color grey). I have a very tight budget as I'm still a student and I'm the one funding my own room and I don't know where to buy or order quality stuffs and furniture that fits my criteria (including budget) so I'm also looking for your help with that. The important furnitures that must be on the room is a drawer, study table with a chair, at least one bedside drawer and lastly a bedbase with a headbord.