lol, I loved the trailer. Your newer videos are great, but don't have any call to action or previous videos links. That helps a channel grow.
What's your uploading schedule? I see on the about page, daily and your last 2 videos were 4 days ago. I would recommend making a schedule.
Not sure what's up with your analytics, you're gaining and losing subscribers at a rapid pace. Like May 30th to June 2nd you were gaining about 8 subscribers a day, shortly after you started losing them.