Ah well. As long as you're doing your best... it's fine. No one can do anything perfectly all of the time. It is important to try out different optimal rotations (IE, don't just go online, read one rotation and say "that's good"). Try out a few and see which work for yourself.
Like was said above, mostly only primals, coil/Alex/raids really need you to pump out your highest DPS possible (ideally).