Yes, I like how you do the waistband. I think I might iron the 1/2" in the flat before attaching it just to make it easier...

In the past I have sewn it with the right side of the bottom of the waistband facing the wrong side of the pants and then flipping it over and ironing under the 1/2" and top-stitching it all down. However, the thing I don't like about that is that the waistband is not caught in the top-stitching on the underside - functionally it doesn't matter (because I sewed it down already) but it doesn't look *right*. Your way will fix this problem Thanks!