I want to decorate my home

I have a habitat house in kerala. My interiors are a mix of mordern as well as traditional mismatched furnitures. I want to upgrade my interior in such a way that everything is blended. I also want suggestions on what kind and color of furnitures, curtains, lights to buy in order to match and compliment each other without taking up tooo much space.
I welcome all ideas and smart suggestions even if you don't have all the required skills and is a starter.