Trimming your own bangs isn’t too difficult, all you need are sharp scissors and a steady hand of course!
Make sure to only cut your hair when it’s dry. The reason for this is, cutting your bangs when wet will mean they shrink when dry. Use a comb to section away the hair you DON’T want to cut and then divide your bangs in half using a styling comb. The main tip is not to cut your bangs any shorter than where the comb is in touch with your face. Snip the hair at a 45-degree-angle and work through it slowly. Avoid cutting straight across as it’s impossible to keep a straight line.