• Starting too high: Many new vapers think they need 50 mg because they were heavy smokers. But if you're using a powerful device, that can be way too much. Start lower and work up if needed.
• Ignoring throat hit: Freebase at high strength is harsh. If you're using salts, you lose that throat hit, which some people miss. You can balance by mixing a little freebase into your salt liquid—but keep strengths low.
• Mixing flavors blindly: If you mix liquids to adjust strength, make sure they're the same flavor and brand. Otherwise, you'll ruin the taste.