I checked out your channel and really like your content

(i subbed)
My biggest recommendation is to get involved in different communities on google+ and facebook, not only by posting but also by interacting with other members. On one of the communities I am a part of I started doing this thing where I'll post to the community page and say hey, if you post a video link below I'll watch and comment. And yes, I end up watching 40+ videos and commenting on all of them, but that just means I am creating a connection with each of those youtubers. It's time consuming but really worthwhile.
Also, consider looking for a mentor who operates a similar channel to yours and has a good sized subscriber base. Chances are, if they are successful they probably have a ton of great advice for how you can improve your channel.
Hope this helps! I'm watching your Life Is Strange series. Great job!
Love,
hellolabgroup