Thought i'd make up a little guide to cleaning and adjusting rear brakes on a Fabia. This is how I do them, might not be the way everyone does them but it works for me. As for brakes if your not confident or sure then ask a pro.
Always a good start to de adjust the handbrake cable on the lever, I haven't included that bit in my pictures but the adjustment is just under the back of the centre console.
The drum (no shock there)
First up take out the T30 securing screw, you may require a impac