打开Snapchat。 点击你的头像。 点击“设置”。 点击Bitmoji。 点击取消关联我的Bitmoji。 出现提示时，点击取消关联。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Tap the Snapchat app icon, which resembles a white ghost on a yellow background. Doing so will open the Snapchat camera if you're logged in. If you aren't logged into Snapchat, first enter your username and password and tap LOG IN. It's in the top-left corner of the screen. This gear-shaped icon is in the upper-right corner of the screen. The Settings page will open. It's near the middle of the page. Doing so prompts a pop-up menu. This red text is at the bottom of the menu. It's a purple button