Recent study showed that bedrooms were the most re-decorated spaces in the house. With those few trick you will be able to achieve a more luxurious feel to your bedroom without spending thousands. 

Go Darker on the paint.
It could seem that subtle tones are more usual for bedroom decor, however, darker paint can make things feel more high end. If you are worried about paint the whole room dark, you can always paint only one feature wall behind the bed instead. 

Using wallpaper on the feature wall.
Wallpaper behind the bed can add an extra design twist to the space. Papering only one wall will also cost less, so you can choose something a little bit more luxurious.

Adding a Headboard.

A soft headboard, usually in velvet fabric, is a good way to upgrade a cheaper bed. It looks wonderful, as well as feels very comfortable.

Cushion up.
It is a very old trick, but always works well. Cushions in different shapes and sizes, highlighting the interior scheme, will always make the bed look more grandiose. Keep your scheme cohesive by pulling out a single shade from the patterned cushions and using it in the plain ones.

Use furniture with a twist.
Using an armoire or an antique looking piece of furniture can always help to upgrade the look of the bedroom.