Perform your first Gap Analysis against your measureable goal, and develop a process by which you can and will close the gaps.
Your first accreditation is always an achievement of which you can be pleased, but it is far more important what you do next. The first is an achievement, the second is an accomplishment. The third is a demonstrated record.
You still have errors and defects, but now you have a system that detects them quickly and remediates their impact on your customers. More importantly your system allows you to learn from your errors and put in corrective actions that make it unlikely that you will repeat that error.
Your system works. You know it works, your staff knows it works, your customers know it works, your colleagues know it works, your competition knows it works. But you are still looking for continuous tweaks for improvement.