I'm not sure why, but lately I've been having trouble with my endurance and have been sort of underwhelmed with my tone quality. I was wondering if anyone had any advice. I play about an hour a day with breaks intermitantly (aside from my private practice). I think the biggest part of the problem is that, in an ensemble, we don't have time to warm up properly, especially the brass. I have a feeling this is going to be hard to combat, but any suggestions would be welcome. Time doesn't really permit me to warm up properly on my own. Also, my tone has been suffering a little lately. I'm trying to find a new position to rest my mouthpiece, because one of my trumpet teachers told me I'm playing too high on my upper lip, which is due in part to the fact that I don't have "trumpet lips" necessarily (my lips are kind of fat for trumpet-fine for baritone, which I played for a while, but kind of fat for trumpet). I've almost always had a good tone, and lately, it feels under par. If you have any suggestions, I'll gladly take them. Also, I was wondering what any of you had to say for or against warming down. I think part of my problem might be my process of ending, not beginning. Thank you!