I would recommend an all acid free mat and backing (maybe do a two sided type framing so both sides can be viewed and then there would be no backing), conservation mounted, uv glass, keep it out of direct light and even limit indirect light. Light is extremely damaging. If under indoor lights, they should be UV filtered. Make sure the frame shop knows what it is doing. Do not go to Michaels, Hobby Lobby, etc. Find someone good that does museum quality or conservator work. If you handle the paper directly, wear cotton gloves to minimize body oils transferring to the paper. And above all, enjoy it because it looks neat.