Simple but effective. A crisp white frame (like the ones I use for the A3 prints I send out) can really push the art forward and focus the eye. (40 x 50cm for A3 framed with mount).
This is down to personal choice and dependent on the picture’s design, but I like a mount to frame a picture before the frame frames. I use white mounts and frames to create space around the prints. They also look good unmounted in a simple gold frame (30 x 40cm for A3 print size)
Which colour frame will work best with your art? You can really set off your print with the choice of frame colour - black, white, wooden, gold, silver. It also depends on your style and the decor of a particular room.
Whether an eclectic mix of shapes and sizes; frames and unframed print or in a uniform, symmetrical grid of framed pictures.
Frames don’t have to be mainstream. Washi tape as a surround, use a hanger or clipboard to show off your design or hang from a wire. I love a magnetic frame.
Balance & proportion in the space - whether you’re hanging a picture over a sofa; on its own above a mantlepiece; or in a collection above a sideboard, the dimensions of the space you leave are just as important as the picture itself. You can measure out placement as a flatly on the floor first to get a good idea. Also if that’s all to overwhelming, you can always simply prop up the print on the floor against a wall (preferably framed so it looks purposeful and not like part of the ever growing mess that invades my home).
Framed or unframed, mixed sizes all look good together on a shelf, whether on their own or styled with similar hues and objects