i've been pressing my seams open for(mumble mumble) years
and always liked the flat seams at the intersections. the one time i seamed the 'correct' way was when i did an entire 96 x 92 using the 'twirl' method that eleanor burns teaches. i hated it and my thumb almost fell off. it was no flatter at the intersections and the rest of the seams were thicker. who needed that?