I’m sure this idea for nursing access isn’t original to me, although I’ve not seen anything exactly like it. It came to me when I made the Jalie twist top last month. That pattern included a modesty panel, so my only modifications were to cut a slit in the center front (about 6-8″) of the panel and make the panel long enough to cover my belly but not long enough to get stitched into the hem. For these two tops, I used the front pattern piece to make my own pattern piece for the modesty panel.
Here is the Ottobre wrap version from 5/2008:
After wearing this one I realized that I should routinely tack the top of the panel to the neckline (about 1″ on each side of the V seems to be enough). As I said before, the sleeves are rather tight so I may not wear this one again. Also, you can see how the cotton lycra is too stiff for the pleats to drape. Yuck.
Here is the Kwik Sew 2900 version:
Ack! Where did that stray thread come from?! 
On this one I think the panel could/should come up a little higher for proportion’s sake. I also see I should have cut the neckline binding about 1-2″ longer, oops. Anyhow, since a picture is worth a thousand words, here is how this style of nursing access looks from the inside:
The modesty panel is sewn into both the lower armhole and the side seams (as well as being tacked in place at the neckline). Once necklines are finished off, I layer it under the outer front and treat the two pieces as one.
They both look very nice. Would the drape of the fabric work better after it’s been washed a couple more times? Also, could you change the sleeves to be short sleeves to salvage your work. It looks like a cute top on the hangar. I’ll bet it looks better on you.