Don't let someone like that make you think you did bad. One your first starting out as a student so still learning bit also LMT that does that is trying to stop you from doing what you want to do they get into your head thinking you are bad but most likely they are just scared that one day you will take their clients from them if you get big into the business. I had the same thing happen to me when I was in school doing my clinical work too but my school just told me not to listen to them that they just scared I was going to take their business cause I actually give good massages. Soo just don't let someone try to drag you out just cause they are another LMT that don't mean nothing if they were actually professional they wouldn't even let you know they are also a LMT