Before starting, ensure you have sharp tools like secateurs, loppers, and saws for clean cuts. Clean them with a solution of one part bleach to nine parts water to prevent disease spread. Assess each tree and shrub; look for damaged limbs, crossed branches, or areas needing thinning for sunlight penetration. Remember not to prune spring-blooming shrubs until after their flowering season as you may inadvertently remove buds set for next year's blooms.