When choosing free ringtones, it is important to consider your personal preferences. Choose a ringtone that suits your style and personality. Also pay attention to the length of the ringtone - ringtones that are too long can quickly become boring, while ringtones that are too short may not be heard well enough. Try different genres and styles to find the perfect ringtone. It is also advisable to change ringtones regularly to provide variety and avoid boredom.