How's this for a frame-up? Hand-draw your own
edge around a mounted photograph.
Even a snapshot glued to matboard will do. Let the subject matter be your guide as you embellish all around it. Use pencils, pens, or markers to make your border.
If it's a rustic country photo, try a rough wood-grain effect or draw some barbed wire! Is it a floral? Use colored ink or colored pencils and draw leaves, vines, buds...you get the idea.
Variation: Add texture by applying modeling paste or crackle paste around the edges of the photo! (Be sure to "antique" when dry, with thin dark acrylic paint.)