There are many things basic thing about interior design that you should follow when doing the interior design of your home yourself or letting a professional do it.
The first and probably the most important thing is to develop a good plan, consider all the option you have and also have all the demands from your family member been considered. Then get everything organized so the whole process of changing the interior design of your home would go smoothly and without problems for you. Moving on, try to find the perfect color scheme for your home by using a color wheel that makes it a lot easier to mix different colors. Furthermore, think about the furniture and what you want to do with it or maybe there is something else in your home you want to change or replace with something new. These are only the first and basic things about interior design.
If this all sounds a bit confusing and you want the whole process to go a lot more efficient and quicker, hire a professional interior designer to help you. They will consider the request you have, but overall will do the whole design themselves, so saving your precious time.