You have to get your ideas right and do not be fickle minded when it comes to this. You would have to stick to whatever decisions you have made. Changing things a thousand times along the way is going to be one of the worst and perhaps most expensive things that you are going to do to yourself, especially when this concerns something as expensive as interior design. So make a decision, and then, stick with it.
Now, the next thing, if you are looking for inspiration, is to look at the sort of heritage that you have, and from there, you can actually get a good idea of what kind of elements and feel you want your house to have in the first place. To ensure whether the design attracts you or not, you can look within the culture and also traditions from your surroundings even if you think that it is nice to have rare pyramids of the Egyptians.
If you think that the design is not suitable for you, you can go for other sort of designs that you want your house to look like. Do not try to combine many different concepts together because it will only make the situation more complicated, so just stick to a plain concept where you can still add some changes to fill in the gaps. Do not think that having loads of ideas is the best as simplicity will usually win the day.
Coming up with a simple concept would be ideal because you designer can help to add is some modifications to fill the concept with more details. Do not be surprised on the amount of progress that can be made with something so simple, it gives you a clearer vision on what can be added and what does not work, and will save you plenty of time as well, and in the context of this industry, it is something that can also save you plenty of money at the end of the day.
These are some pointers to get you started on your ideas. What it means is that all in all, you are now going to be able to approach this with some direction and some focus, and this will allow you to understand the concept of interior design and how this is going to work for you and how this is going to make things much easier for yourself at the end of the day, and how you are going to need to make this something easy to understand for yourself.