Want to frame something but the frame is just a tad too big? Card will be your saviour.
Cut a piece of card to the size of your frame (use the backboard or glass of the frame as a template). Place the art in the centre of the card and measure how wide the card border will be. Mine measured 2.5 cm in width along the width of the card and 2cm in width along the length of the card. Rule guidelines for the widths of your border then cut using scissors (or a pen knife if you want to preserve the centre of the card). Place your card border in the frame, then place the art in the frame as well. Adjust the art so that it is in the centre of the card border, then put the backboard of the frame back in place + hang.
TIP: the thicker the card, the fancier it’ll look.