"Row 1- KFB,SM,KFB, Knit 1 before the next marker repeat beteewn" 2 more times KFB,SM,KFB (8 increases)"
Typically in a raglan, there are 8 stitches increased every other row. Row 3 should be exactly like row 1 but there will be more stitches between markers. That doesn't matter. You knit to the stitch before the marker, kfb, slip the marker, and kfb again, then knit to the stitch before the next marker. Make sure you only have 4 markers on the needle.
You don't do row 3 twice, all the WS rows between the increase rows will just be purled - not knit, which it looks like you did.
sue- knitting heretic