I just poured the polish on my work surface and dabbed my sponge in it then dabbed it on my shoe. I would recommend using actual paint though, I think it'll be easier and less smelly. I dabbed the polish pretty much all over the canvas, leaving the tongue just bleached. I let it dry for a little then I laced them up and I washed my shoes then I dried them about half way through then let them air dry for a few days. When drying them in the dryer, have them hang on the door. My dryer is a front loader so I tied the laces together and put them around a paint brush and I closed the dryer door. I had to use a paint brush because my laces would just slip and make it harder to grab when I open the dryer.
Because I've done a couple galaxy nail tutorials I'm not going to make another galaxy tutorial for this post. I't the same concept.