Harry Potter and the Half-Blood Prince

Hi! i know alot of people have been missing a crest. walkthroughs and such says theres one in the transfiguration courtyard, in the form of a banner run. however after searching over and over and using other walkthroughs i finally found one that didnt list one as banner run but listed one someplace eles. since i dont know what all everyone eles has done i'll just state that my missing crest was by hagrids hut. when you start there, start going up the hill and its in a little alcove on the left. its hard to see, in fact, if it wasnt for that walkthrough i wouldnt have found it at all. id post the whole walkthrough (its much better then the one here) but its not mine to post "officially" but if anyone wants me too i'll post it here.