I honestly think its great. I've been looking for all over SU texture pack and this is the best one yet, although how little there is so far. A few things though is that maybe you could change the colors of everything slightly, based off of the colors used in the environments of SU to make it all tie in nicer together and, I'll admit, that's one thing that I notice most texture packs don't do that I've been hoping for. Anyways, all in all, keep working at it. I can't wait to see what you do next with this and to, eventually, enjoy the finished product. Keep it up and remember, if you ever mess up; "If every pork chop were perfect, we wouldn't have hot dogs!"