You do not have to be an expert to replace wiper blades, yet you might want to know what to expect when you view page for a new pair. Make sure that you wipe wipers clean with a wet cloth before installing them. You have to ensure that arms are not bent. The blade must face your windshield like a glove. It should be snugly. If it does not, you might want to try a simple tip. Lift the arm to a few inches, then allow it to freely snap back. This action makes the blade sit snugly and fit the glass better.