How do I fix drivers electric window fault?

I've tried and failed to understand the method described for fixing window fault . Please could someone give me a step by step idiots guide. 07 Clio window goes down but not up. Left it 10 mins and tried it and it went up. Next day tried it appeared to work then problem happened again . I know the garage is going to rip me off.

Damsel in distress
June 2014