My First Stop Motion Video.

Hello, everyone one steemit. Hope all of you are well by the grace of Almighty.
Today, I'm going to share my first stop motion animation video with you. Actually, it’s not that good. I'm learning about it. There is a lot of things that I don't know about it. I'm still watching tutorial videos on YouTube. As I know, there are some of steemit users who is expert in this work. I need some tips from you guys. Just like adding music or creating music, making background, fixing light effects. In this video I tried to show that two chocolates touch each other and create another. But, I don't know how to create that flash when it changes. I don't have enough idea about selecting the clip changing time.
So, it would be so helpful for me if you could give me some tips about it.