Replacing shirt ons with Velcro - sewing advice question?

Great idea, but a tiny bit trickier than you probably hoped. To make the blouse look right, you would have to remove the ons and re-sew them on top (so the blouse had the appearance of being oned when closed). But easily done. At the same time you can sew the velcro tabs on the back (behind the shirt, behind the on) and the other half of the velcro tab where the on originally was. Should work great. The sticky velcro won't last through a wash and dry. Has to be sewn. Good luck.