I would brace for impact, unbuckle my seatbelt, wait for the EV(Easy Victor Easy Victor) command and crew members instructions and then go low to the ground and follow the lighting to the nearest emergency exit that is available for use and slide down the slide and move away from the aircraft leaving all personal items behind. If its a water evacuation I would put on my vest and wait to inflate it until just before the exiting the aircraft.

It helps to look for where the lifevest is as on some aircrafts its located in the center armrest or under the seat in front of you. I practice buckling and umbuckling my seatbelt a couple of times, count the number of rows to two or three emergency exits.

In fact I look up the seatmap of my aircraft and remember how many exits are next to my seat in front of me and in back of me making a mental note of the exits during the briefing.

Furthermore I look over the emergency evacuation card if I am not familiar with the aircraft and even if I am just to mentally remember what to do when.

I would try and help passengers remain calm the best I could. For me I would not panic and just do what I was taught.

BTW I watch the safety videos online and know that you are supposed to pull down hard on the oxygen mask to start the flow of oxygen.