$3000 is not a lot of money to spend on a make-over. This means that your decsions will be guided by your budget, and what you can live with, and what needs replacing. For instance if the carpet is in a good usable condition (I can't see from the photos or information), then use that as a starting point for the choice of colours and materials for the rest of the space. Your budget will exclude any changes other than paint to your ensuite and existing cabinetwork.
One of the most important aspects of a bedroom makeover is the window furnishings to make sure that they block out enough light for those early summer mornings, and keep the heat in during thise cold winter nights.
Careful selection of bedside lights can give you a lot of bang for your buck, as can a fresh coat of paint.
Unfortunately only generalisations can be made about your makeover without any understanding of the rest of the room, the location of the ensuite, your climate, your existing furniture, the orientation and the type of doors. Good design is informed by understanding the client, the constraints, and the opportunities. You have not provided any meaningful information for a meaningful response.
Best of luck
of Dr Retro House Calls
will you be doing your own labour? $3K won't touch the sides if you are paying for labour and definitely won't cover anything structural - possibly just use it wisely to update some non-fixed aspects like the bed & side tables & a piece of art, perhaps change some door furniture/handles & maybe if you're game give it a coat of paint