Pocket decoration, avoiding bulk

Hello, I'm wanting to sew a narrow piece of cotton lace across the pocket. My initial thought was to sew it on top of where the top stitching will be, or to baste the pocket and sew on the lace at the same time as sewing that line of top stitching. I really want to do french seams for this dress, and I am worried that adding the lace where I plan to will create too much bulk. I plan on using chambray for the top part of the dress. I wonder if I would be better putting the lace further down the pocket, but am concerned that this would look silly. Any thoughts or ideas? Am I worrying unduly? I really want to use this specific piece of lace, as it will tie in to a co-ordinating layette set. I only have a very small bit of the lace left, pretty much enough to go across the two pockets.