As others have noted, having a premade/commercial trauma dressing that is bandage and dressing in one can be a big help in self-aid. My preferred dressings are the Tactical Medical Solutions OLES Bandage or if I need a more compact and lighter dressing I like the H&H Mini Compression Bandage.
_________________________
"Trust in God --and press-check. You cannot ignore danger and call it faith." -Duke