bring your yarn forward between the needles, slip the stitch purlwise, take the yarn back between the needles. it never goes OVER the needle.
round 7. k5; Yarnover, and bring the yarn forward so it is in front when you slip the next stitch purlwise. take the yarn back between the needles.
round 8-11 knit 5; yarnover; slip the previous yarnovers purlwise; bring the yarn forward between the needles and slip the next stitch purlwise with the yarn in front; take the yarn back between the needles.
you will end up with a bunch of parallel strands over the needle from the yarnover
in round 12 you knit these all together with the slipped stitch, so your net result is no increases.