A good start is to walk around your workplace and think about any hazards. Check manufacturers instructions or data sheets for chemicals and equipment as they can be very helpful in spelling out the hazards and putting them in true perspective. Remember to think about a long term hazards to health. take account of non-routine.
Think about people who might not be in the workplace all the time, visitors, contractors and maintenance. Take members of the public into account if they could be hurt by your activities. Ask your workers if there is anyone you may have missed.
Trying a less risky option, preventing access to the hazard, issuing protective equipment, and involving and consulting workers.
Should have all recorded: proper check was made, you asked who might be affected, the precautions are reasonable, and the remaining risk is low, your involved your employees or their representatives in the process.
These questions should be asked to yourself: Have there been any significant changes?
Are there improvements you still need to make? Have your workers spotted a problem? Have you learnt anything from accidents or near misses?