I have a few tips:
Best to make the sleeves out of either uncoated fabric or silnylon, for slipperiness.
Generously sized sleeves are easier to slide poles thru.
I have always sewed the sleeves closed (I.e. made it inot a tube) first and then sewn them into the seam.
It can be tricky getting the tent sized right for the poles (or vice-versa) and the size of the pole sleeves is part of that trickiness. HTere is no easy ay that I can think of - even the most accurate drawings can't take into account the stretch of the fabric, and even a mock-up can have problems if the fabric used is different from the final fabric. I suppose using a stretch fabric for the pole sleeves, as some manufacturers do, could make this easier. Having the poles first, making the tent to fit, and going tight if anything, then cutting a little off the poles if needed, could work. Or incorporating some sort of tensioning device to deal with any slack is another possibility.