Down and dirty version:
Take a piece of fabric, cut it to the width you want the main bit of your apron to be, and the length you want it to be plus
enough for the height of the pockets.
Use bias tape to finish the bottom edge.
Fold up the bottom edge to create the pocket and pin in place. Once it's in place, use bias tape to finish the sides.
Sew the pockets to the right size by just running a straight stitch from the bottom edge to the bias tape at the top of the pockets.
Use bias tape again for the ties and top edge of the apron. Depending on how big you are (since I honestly have no clue
) either use two pieces that meet up in the front center or a single piece, and stitch all the way from one end to the other.
WALA!! One quick, easy, and fully functional wait staff apron.