Poor sound quality
It’s a classic mistake to make. A package looks visually powerful, but the audio is way off the mark. From music that’s too loud to voice tracks that are hard to hear, poor audio can easily make a good quality video look amateurish. As a guide, try watching back your finished clip without any audio to see if it flows properly. Then turn on dialogue or narration to see how this works without any music to potentially cover fluffed or mumbled lines. Finally, watch with background music added. If this is too loud it should be immediately turned down. If audio isn’t mixed correctly, it can easily distract from all your good video editing work. Using editing software’s basic mixing tools is a good idea for beginners.