The first S in the front view clashes with the white of the shirt's background color. The texture/shape of the design on the left side of the front view reminds me of a cow oddly. Also the first thing I mentioned about the first s in "SS" applies to the second as well. I get the effect of a worn away style was the goal but it's overdone and makes the text hard to read. Maybe try to use smaller cutaways in larger numbers rather then a smaller number of large decays.