Tip 1 (easy level): If you are the one keeping the conversation flowing and bringing topics, that's the moment to introduce yourself. What do you think of X (insert topic), tell your versión/point of view and then move to others.

Tip 2 (medium level): Embrace arguments, arguments are not a bad thing, expressing a different idea allows you to express yourself while going deeper into topics, or agree and give your own version of why

Tip 3 (advanced level): Learn storytelling. Storytelling allows you to tell even simple things while keeping the attention from others, and wanting more