First, I would recommend you look within the present curriculum that is available to you.
Second, I would look into schools that offer Aerospace/Aeronautics degrees. They have counselors who can give you the courses needed to qualify for this selected degree.
Third, have a list of questions such as where you can use your Math and Artistic Design talents/interest (aircraft interiors, Space vehicle interiors) which people with be working and living in.
Fourth, look into companies that are in these businesses by contacting them directly to see what their future skill needs will be. Lockheed, Boeing, Virgin Aerospace, Space X. There are many new companies in the aerospace race!!
I hope this will give you some direction to get enabling answers for you Imagineering of your future.