House Interiors is often confused with "Wood Work" in India. In reality, wood work is just 30% of Interiors.
Interior designing is a mixture of Science, Art and skilled craftmenship to transform a dead block of space into a lively home.
It has many elements like Managing Spaces, Storage, Lighting, Texture and color options, Choice of materials etc. and is definitely not to be confused with "Wood work" or "Carpenter work"
A good enormous chunk of space can be made into a gallows by wrong choice of material and wrong choice of interior planning, and a small cranky space can become inviting by proper interior planning and correct use of materials.
It is always better to have a good understanding of what you want to achieve, and then execute it in reality. Rather than trying out random things on the house and settling with the wrong choice.