Antique Dining Chairs How Does One Refinish (stain) Old Wood Dining Room Chairs?

How does one refinish (stain) old wood dining room chairs? - antique dining chairs

I am 40 years of chairs in the room, was completed in the old greenish-white (OEM). Restaino I made of wood in a natural appearance. Am I obligated to terminate the old strips? Do I need a base? HELP !!!!! Thank you very much.