I want to do interior designing course and I have not aplied for any college till now and registration is closed every where.whatshould I do

I have scored 72% in my 12th board in science and I did not have maths as my subject and I have appeared for medical entrances and did not clear any of and I want to change my stream and pursue as a an interior designer.I have not applied for any of the colleges. What should I do now?