Slack Re-branding

I have designed slack trail version . If trail version slack logo will be visible , if you want to show your brand logo. You need to paid version. I have fully designed using Figma online tool. Prototype URL : https://www.figma.com/proto/HK15snyVKX3IO3WZhncGx1C5/Slack-App?node-id=20%3A3&scaling=scale-down