The phrase "to frame a picture" means to put a border or border-like object around a picture, usually to enhance its appearance and make it ready for display. Full definition
A member of our party was celebrating her birthday and all of us were absolutely delighted by the wonderful gesture of a surprise champagne celebration, followed by framed pictures of the toast. (kayak.co.uk)
They have some really fun styles, including the pink pearl frame pictured above. (outfitsandoutings.com)
For inexpensive and creative art, frame pictures from old children's books. (hgtv.com)