Everyone wants to make his room and house quite exquisite and elegant with the aid of classical paintings. You can do it yourself by painting the walls in a geometric fashion. You can paint by combining different geometric figures like triangle, rectangle, pentagon, hexagon, and many more. The combination of the colors on the base of shape of the figures will make it more eye-catching painting. It is not a tough ask and you can do it on your own quite easily. You do not need to hire a specialist and I think you are the best specialist. Have a look at the pictures below for getting the idea and understanding it properly.
Here is another great design which can be made by yourself in your house.