Serious face while gambling. What to do?

I'm so worried that I always look really serious while gambling. I do this subconsciously and often do not notice it. But as I stream on Twitch with Facecam, I think that's pretty disturbing for the audience. Are there any ways to exercise that?

Please do not laugh at my face:

Would be nice if someone could help me. I just want to look normal.

Must try to look a little more relaxed.

It helps to practice, practice and practice

Take a pencil in your mouth. This should be able to train smiles, I once heard

First of all, I find your hobby of streaming pretty cool. I guess you have to decide what is more important to you. If you want to entertain your viewers, then put less emphasis on the quality of the gameplay and pay attention, for example. More on the chat. But if you prefer to deliver excellent gameplay, then just stick a piece of paper next to your monitor that reminds you not always to look so focused.