Thank you all for your much needed info. I am definitely going to try some of these. I will post when I've made a few.

I just made my daughter three nursing covers. I read over several patterns on the web and then made my own using the best features.
-I used 3/4 yard for the main part and just turned under 1/4" then 1/2" on the two short ends and one long end and stitched; and then press under 1/4" then 3/4" on one long edge. Found the center, inserted 15" of boning in the casing and sewed all the way across that edge, trying to avoid stitching through the boning.
-Out of 1/2 yard of coordinating material, I cut a 27" x 4" piece and a 8" x 4" piece for the straps; and two 14" x 8" pieces for two large pockets for the front of the cover.
-The 27" strap is folded 1" in on both sides, then in half to leave you with a 1" strap. Then I stitched. (Fold under the ends so there are no raw edges)
-Did the same with the 8" piece but then folded the 1" x 8" sewn strap in half putting two D hoops on it.
-I stitched the 27" x 1" strap at the end of one edge of the boning on the top of the apron, and then stitched the folded now 4" strap with D hoops where the other edge of the boning ends. I avoided stitching through the boning.
-Then I folded the 14" x 8" pieces of fabric in half with right sides together so I had a 7" x 8" piece. I stitched all around leaving an opening to turn right side out. I turned, pressed and top stitched on the front of the apron. I stitched them 1 1/2" from bottom and 4" from center of apron. The large pockets will be great for spit rags, pacifiers, nursing pads, etc.
It was fun picking coordinating fabrics with my daughter for these. My friend asked me to make her daughter one when she saw my daughter's because the ones available at the store are made with ugly fabric and no boning. We spent an hour at JoAnn's picking fabric. Too many choices!