For me, the term 'composite photo' refers to one made up of two or several photos merged together in Photoshop, for instance, my panorama of the Hacienda
http://www.aidan.co.uk/data_sheetManHac99pan.jpg.htm which is made up of three overlapping photos.
Your photo is good. As Phil says, the barrel distortion caused by the camera lens can be corrected in Photoshop.