Background: My pattern says to BO 6 sts at beg of next 2 rows. If I do that I'll create a little stairstep, which I'm trying to avoid.

Instead, I BO 5 sts (1 less than the pattern specified). As you can see, there is only 1 stitch on my right hand needle.

Now, I slip that stitch back over to the left hand needle, mounting it backwards (the way it would be if I were doing a SSK).

And then I knit those 2 sts together through their back loops. By doing this, we've eased in the loss of a row at this point, creating a curve rather than a sharp edge.

After several rows you can see the curve is still continuing. Not only does this look better but it makes sewing in the set-in sleeves a whole lot easier too!