How do I hire some one to graft

I've been looking for someone to bridge graft some trees fore sence spring and Its fall now about four trees have died and the rest look bad I see utube vidieos and Manny articles but no one for hire I mean I seen videos on operations does that make me w doctor? No so what's the matter with hiring a pro if I wanted the tree cut down their is a list a mile long for that but no one for bridge graft