Cut 2 rectangles from white cardstock to measure 10 x 15 cm. Take one of them (the front of the card) and measure 2 cm all around it creating a frame. You can use a pencil to trace the frame.
Trim the middle of the frame leaving the top connected. Score the sliding flap horizontally at 1, 6 and 11 cm from the bottom and fold.
Matt the front of the card (the frame bit).
Cut a piece of white cardstock measuring 7 x 14.5 cm and affix it to the bottom of the flap creating the pull tab. The pull tab will be a bit wider than the sliding flap.
Turn the front of the card around and add foam tape around the pull tab. Affix the 2 sides of the card together.
Add a topper on the sliding flap and a sentiment.
Download the template here > 6sliding easel_template