awesome shoes!! they make my old black chucks look pretty bland
next time, try diluting your acrylics in a little water, or, even better, in textile medium. This medium takes time to dry, and you have to iron it once it is, but when this is done, the paint clings on the canvas for good, becomes totally water proof and remains flexible, so the paintjob will last a loooooong looooong time. I also suggested water because by diluting the paint, it makes it a lot easier to apply, you can take my word for it!