Basically what Powercow said. + Maybe, for starters stick with the "no TK" rotation, to get to pressing buttons on time. I was able to get a lot better when someone pointed that out to me.
just learn the regular rotation, and practice double weaving in the RoF window.

What i personally do (and I am not great at monk anyway) is, every time I am queuing for things, i just keep hitting the striking dummy - practicing my GCD rotation with OGCD presses, not really doing openers or anything. To have the main rotation engraved into my muscle memory, so I do not have to think about the side/rear combo alternation.