The only mistakes I saw were these:
"Shadowstar lead the group, Darkheart on his left side and Icestorm on his right."
It should be "Shadowstar led the group."
"Well, sorry to say, but your on ShadeClan territory."
Should be "But you're on ShadeClan territory."
"What a werid name, she also smelt like a loner of a rouge."
Should be "What a weird name. She also smelled like a loner or a rogue."
I don't mean to sound bossy or anything, but I'm just trying to make it better.