I'm an undergraduate and was fortunate to be selected for a 12 week summer placement in a professors lab at my university. I worked way over and above the funded hours and made some very interesting and exciting findings. I have been asked to present a talk to the university body in a few months. I agreed with the lab professor during my placement that this was a good opportunity.
Recently I pulled together my presentation and a summary. I copied the professor on it, who replied very angrily saying I had let him down; I wasn't following lab etiquette and I had no right to publish my findings without his agreement as he was funding it and it was part of larger research work etc. The findings hadn't been published, I just wrote the summary and presentation and only he has seen it.
I've never done lab work before and just prepared the presentation in advance before the term starts to be as organised as possible. I'm worried I've ruined my future lab prospects - I wasn't trying to breach any confidences and was just keen and excited to do the work.
What is your advise on how to further handle this, as well as future lab findings/discoveries and hierarchy discussing anything, lab work etc. I am not sure how to repair the relationship as I was shocked about it and am now quite nervous following his reaction.