Commerce

You should be at least 2nd year pass out to become eligible for CFA.

You can opt for higher studies in accounts, finance, business management, hospitality, etc.

You are not eligible to do BTech unless you have PCM st +2 stage. In order to become an engineer , you can do BCA MCA and become a software engineer.

It's up to you, what your area of interest is and your aim, in which field you want to take your career, etc.
You have number of options to choose:
If you got good percentage, somewhere more than 85% then my suggestion is you should go for regular college in DU and after that MBA through CAT/XAT.
Or
You can go for professional courses such as CA/CS/ICWA along with graduation from correspondence.

You need to complete your post-graduation first and then go for B.Ed. degree.

If you are interested, then yes. Hotel management has a great scope in India as well as abroad.

Diploma after 11th wont help you much professionally. I would suggest you to complete your 12th first and then apply for B.Arch through JEE or NATA.

You will have to appear for the entrance exam conducted by NIFT and if you happen to get good marks then surely you can get admission in NIFT.

You can change your stream in class 12th itself but it will be difficult to study different subjects. Consult your school teachers, they can guide you better than online forums.

You should opt for B.Com or BBA, and then pursue MBA in entrepreneurship.