I sometimes ride with a team called "Purple Pumpers." We have a really nice team T-Shirt Jersey we wear, but it has no pockets. I would like to sew the three pockets on the backside of the T-Shirt. I bought some really nice coordinating fabric that I plan to use for the pockets. Does anyone have any ideas of what I should "incorporate" into my sewing? Warnings as what not to do? We wear these on the MS150 so I'd really like to make it practical!