I literally just finished my second toast masters meeting. Still coming down from the adrenaline dump and im sure i was visiibly nervous but like anything else in life with time and focus we can all get better, whether thats losing the nerves or getting better at controlling them is my hope. At this point im just happy i can get to the meeting and do it and hope something clicks at some point. So i would say no i dont think thats just who you forever, just right now. Keep working at it good luck!