Tea Biscuit, I do it just like you! Fasten it sort of upside-down with the clasps in the front, then spin it around so that clasps are in the back (which is where I got stuck with that too-tight sports bra - oops). Then, I lean forward (because the bra specialist at the local fancy bra store told me to!) as I flip the bra upwards to wrangle in the girls (!), slip my arms through the arm holes, wiggle everything to make sure it's all properly seated

, make sure the band is flat and right against my skin, and then finally, kind of pull the breasts apart a little to make sure there's some separation. Phew. It probably looks nuts!
The *4* sports bras I ordered were pretty much all a bust (ha - no pun intended!). So disappointing. I might try the most promising one or two again before I return them, but it was really disappointing!