How can i get an accreditation in my work ?

Proving that you know what are the requirements of Quality and why that requirements is needed. You must be aware of International codes, standard and specifications in your field of expertise.

Accreditation is a process of external quality review used by higher education to scrutinize colleges, universities, and educational programs for quality assurance and quality improvement.

First you have to figure why you need to be accredited! As if your institute providing services for public, accreditation is the must. It does provide you a close view into the quality level you serve; and what are the gaps into perfection. Therefore, Fist lock for local standards regulate your activities, compare yours, if you feel near do or apply for mock survey. Then you  decide what you need to meet the requirements and when with an action plan.