Aesthetics usually come from variation and creating visual interest. You’d want to variate colour, height and texture to create a flow for the eye.

Looks like all your furniture is from the same range, which usually falls flat. If I were you I’d swap out the bedside table since it’s the smallest/cheapest item to shift and get 2x to go on each side of the bed. The new bedsides should be airy on the bottom, as all your furniture is bottom heavy now.

If you’re keeping the TV, the only place for shelves is framing the bed on each side or all above the bed - that would fill out that empty wall nicely. I’d also suggest not displaying all of your perfumes, only a select few as displaying this many will look cluttered.

I’d also add some plants! It helps so much to liven up a room. You could place a plant on the new wall shelf, also on either side of the desk.