Start with dry or slightly damp hair
Use sharp haircutting scissors
Section off the bangs you want to cut
Clip the rest of your hair away
Comb the bang section straight down
Decide the length before cutting
Cut a little at a time
Hold the scissors vertically for a softer edge
Trim in small snips instead of one straight cut
Check both sides for evenness
Cut less than you think you need
Recomb and reassess after each small trim
Keep the bangs slightly longer at first
Style the bangs to see how they fall
Make final tiny adjustments only if needed