Hi, I am an editor basically I edit video and photos by changing the aspects or factors that will help the video or photo look best for viewer these are some factors that I take consideration while editing 
 - colour gradient
- style to be formal or light tone 
- text effect to make it look more informative
- aspect ratio to be provided as per need 
- Transitions to make it more effective
- Effects depends on photo or video sense
Basically just tell how you want I will give my best to make it  look that you will love to see.