am completed BE civil....now i am planning to do a diploma in architecture or interior design....

Hi Abhijith, you can pursue your career in architecture or interior. you can try the best institute that is IAIE. For further details please contact phone no 9739398262.

you can do PG diploma in Interior Design, Retail design , Product Design or Design management

If you're creative, you can also consider going for Design and Animation. However, you must first check if you're suited for Animation. Animation is an art form and a very demanding career. It has ample opportunities for the creatively talented people. Typically you should have good sketching skill