Sewing question

[bluehwys.livejournal.com]

I'm using this tutorial to make a bag for my mom. I've made two other bags with this tutorial, so I'm pretty comfortable with it. The difference this time, is that I'm doing two-sided straps for my mom's bag. My question is, when putting the straps between the lining and the outer fabric, how do I make sure that the top of the straps is, well, on top?




The outer fabric is the yellow, and the lining is the gingham. Thanks in advance!