Your logo is similair to a profile picture. A good look is one that represents your brand and is easily recognisable. Your logo should:
- Be simple and clean
- Capture your brand name and messaging
- Feature colours that evoke the desired emotion
- Represent your business accurately
- Be timeless
When creating your logo, you should keep the future in mind. You shouldn't design your logo based off trends at that time or what is current, keep it clean but modern that will be timeless.
"But I've seen logos change", you say? They do, but good logos will only tweak. For example, think of the McDonald's logo. It has slightly changed over time yet it is still the same logo when you look at it and their customers still automatically know it's them.