1. Make sure your video description is at least 80-100 words to improve chances that Google will rank it higher. 
2. Make a strong thumbnail. PNGs on a plain colour background with bold text is one effective idea. 
3. Pull together as many videos as you can into playlists so your other videos will autoplay if someone lands on your playlist. That way, people can see what other videos you have to offer. 
4. Google likes information, so the more data you give your video, the better. 
​5. Add links to your other playlists/videos and the subscribe button at the end of your video using the cards in the creator studio portion of your YouTube page.