Here are several favorite bedrooms

I like second plan! That space will fit the wardrobe perfectly. Take all colors from the art. The colors can be lighter or darker than the colors you see in art. Take "Venice" with you to paint store and they might be able to help you choose good colors. Idea: paint four walls the same and see if you like that. If you feel the room lacks interest, then paint the accent wall. Choose a pale green that harmonizes with "Venice" and a darker green accent. Yellow + red accent White + blue accent

You must go English. The colour depends on the kind of finish that you want in the sense whether it is veneer or laminate. You get excellent laminate these days. Don’t introduce a dramatic shade, instead opt for something subtle and subdued. Infact if you have a great carpenter glass would be a great option. However it must be toughened and frosted white.

Proportions in this bedroom are out of place. The bed is quite large and bulky to look at, and it covers most of the floor area. If you are planning to change the bed, then you can replace this with a smaller bed, preferably a floating bed(with no heavy storage beneath). It will give a sense of larger floor area. Next, the sofa/couch can be replaced with a narrow wooden console/table against the front wall. The artwork which is now hanging above the headboard can be kept/hung above the wooden console. The console can also have other accessories to decorate it. Now, the ceiling is not visible in your photos but the walls can change the look of this space immensely. Dark tones will close the space in and the room can look like a small box. You can go with lighter shades/hues for all the walls and add a texture/wall paper on the headboard wall. If you keep the same furniture, then colours which you can choose from are:- Light/pastel shade of teal Mauve or lavender Very light shade of pista green. The headboard wall can have a deeper texture of the same colour and you can hang a round decorative mirror which will reflect more light in the room. Make sure to choose curtains and bedsheets that complement the wall colour. These are my suggestions. However, it’s always better to take more opinions. Hope it helps! Do share the pics of the final makeover!