How to Trim Your Eyebrows
To trim your eyebrows, start by combing your brow upward with a spoolie brush and cutting any hairs that stick out from the top of the brush. Then, comb the hairs downward to trim the excess hair on the underside of the brow. Alternatively, use tweezers to pluck any stray hairs above your nose and underneath your arches. Make sure to pull each hair in the direction of the growth to prevent ingrown hairs.
Brush your eyebrow hairs up. Use a spoolie brush to brush the top of your eyebrows straight upward in a repetitive sweeping motion. All of the hairs that extend up out of the eyebrow when you do this need to be trimmed. Hold the hairs in place with the brush. Use the spoolie brush to comb the hairs up to the top edge of the brow. Use the brush to hold the hairs while you trim to prevent cutting them too short. Use scissors to trim the hair above the brush. Use some nail cutting scissors or hair cutting shears to cut the excess length that's sticking out of the top of the brush. Focus on cutting the longest hairs and slightly stagger the length as you go by cutting each hair a slightly different length than the one before. This will make your eyebrows look more natural. Brush the hairs out at a 45-degree angle and trim them. After you've cut the long hairs, use the spoolie brush to comb the eyebrow hairs out at a 45-degree angle. Hold them in place with the spoolie brush, then trim any hairs that are excessively long. Comb the hairs down and trim off the excess. Now, use the spoolie brush to brush the eyebrow hairs downward. Trim away the excess hair on the underside of the brow. Repeat the entire process on your other eyebrow. Take a shower before you tweeze. Take a hot shower beforehand to open up your hair follicles. This will make the hairs come out easier, which will also likely be less painful and irritating. Pluck hairs above your nose and and underneath your arches. Cleaning up these areas can make a big difference when it comes to perfecting your brow's shape and making it look neater overall. Look for stray hairs underneath your arches and above the bridge of your nose, grip them one at a time with a pair of slanted tweezers, and yank them out in one quick motion. Use your fingers to stretch out the skin you're plucking the hair from. This can make the plucking process less painful. Pull out each hair in the direction of growth. Pay attention to the direction the hairs grow in before you attempt to pull them out. Make sure to pluck each hair in the direction of growth so that you can swiftly remove the entire strand. Going against the grain can make the hair break off near the root, which can lead to ingrown hairs. Stay away from magnifying mirrors to avoid over-plucking. It might be your natural instinct to zoom in on your eyebrows so that you can see every detail better. Resist the urge to do this, as it can give you the illusion of having more follicles than you really do. This may make you accidently over-pluck your eyebrows. Stop, take a step back, and look at the overall picture several times while plucking. This will also help you avoid removing too much hair. Use the inner corner of your eye as a guide. To find out where your eyebrow should begin, trace an imaginary line from the inner corner of your eye up through the eyebrow. Remove the hairs that extend toward your nose from that line. Go for an eyebrow shape that complements your face shape. Everyone's different, so no two eyebrows look exactly the same and slightly different shapes look better on different faces. Take a look at your face shape so that you can figure out what subtle changes you can make to your eyebrows in order to look your best. If you have a long or rectangular face, an eyebrow that's flatter and straighter across will make your face appear a little shorter. Thick brows can look overwhelming on small faces and heart-shaped faces. Thick brows create balance if you have a square jaw. A more curved brow can soften the angles of a diamond face shape. Use a brow gel to make the hairs go in the same direction. Keep control of your brow hairs by using a brow gel. Apply the gel by moving the wand upward and outward against the brow. This will help your brows maintain their nice shape all day. 
Brush your eyebrow hairs up. Hold the hairs in place with the brush. Use scissors to trim the hair above the brush. Brush the hairs out at a 45-degree angle and trim them. Comb the hairs down and trim off the excess. Take a shower before you tweeze. Pluck hairs above your nose and and underneath your arches. Pull out each hair in the direction of growth. Stay away from magnifying mirrors to avoid over-plucking. Use the inner corner of your eye as a guide. Go for an eyebrow shape that complements your face shape. Use a brow gel to make the hairs go in the same direction. 