Xaston, it's impossible to not give off any tells like that.

Everything you could have possibly thought of CAN be a tell.

Did you put a stack of $10s in or throw out a blackbird ($100)?
What were you doing with your other hand before compared to what it's doing now?
How exactly did you bet this time? Did you do it differently last time?
How has your posture changed?
Etc. etc.

It's impossible to give off no tell 100% of the time. It's impossible to talk and not give info away something sometimes. Internet players are by far and large worse at it.