First, position the tip of your IEM into your ear with a slight forward angle.
Next, gently rotate backwards until it properly fits into your ears.
Then, gently press the IEM for a better seal and comfort.
Make sure to always start with your volume all the way down on your sound source. Most sound sources such a smartphones have dafault volume level, whic is too loud for custom in-ears.
Warning: Too much exposure to High Volume Pressure Levels can result in permanent hearing loss. If you experience ringing in your ears, consult aan audilogist.