These are the things I look for and strive to achieve:
- Consistency and Quality
- Personal Connection with your viewers
- Entertaining Personality
- Good Channel Art
- Good video ideas (Be unique, don't just hop on any trend you see)
- Personality (I wrote this again because it's really what makes a channel hit or miss for me, your quality could be bad, you could be filming on a potato, you could have terrible channel art, you could have everything wrong with your channel that's possible but if you have a genuine and likable personality I will still watch and subscribe to you.
P.S. I looked at your channel and you hadn't uploaded, but you have channel art and a twitter linked so I assume you want to make videos. If you do want to make videos, my tip is to just upload, don't worry about your videos sucking because your first videos will suck, but the only way to improve is to keep uploading. I know this wasn't your question, but I felt like I needed to say it. good luck!