Make sure the top of the pad is facing up.

The brake pad should have a subtle curve and should be aligned so that the curve of the brake pad matches the curve of the wheel.

Slide the break pad to the correct height in the caliper so that the pad is making contact only with the rim of the bike.

Holding the brake pad in place with one hand, tighten the bolt until snug. This should not require a great amount of force, but you should not be able to wiggle the brake pad after tightening.

Repeat these procedures for both sides.