If I ever played like you it would be time to give up. Your technique & touch is about where I expected...just like your big mouth. Lower your sights old son and leave the big works for the professionals
just please don't let some random guy discourage you! i know art is a very delicate thing and it's really easy to hurt people. so don't listen to this a**.
in addition to grossly overestimating yourself, you express malice and spite toward people with ability that exceeds your own.
and your are by no means struggling with the endurance (that I can see)
Oh good... then I'm hiding it well then