Hi Claire!
Is it possible for this to work as a frame in photoshop after making it in illustrator and pasting it into photoshop?
Thank you!
You can bring Illustrator content into Photoshop by copying and pasting, using either of the File > Place options, or adding the frame to a CC Library and dragging it out from that CC Library to your canvas in Photoshop.
If you make the shape of the frame that you want in Illustrator, you can fill it in (so it's solid) and use it as a Clipping Mask in Photoshop. Place the shape below your image layer, right-click on the image layer, and select Create Clipping Mask.