There are multiple ways to do this. Attached is an example of two of them, using a screen grab of your photo (so it is small) & a copied, pasted, & resized "Path6076" layer from your svg file (so it fits the dimensions of the stamp frame outline in your photo).
For the mask layer method, first fill the Path layer with black & then drag & drop it on the thumbnail (important!) of the photo layer. Move & resize as necessary.
For the clipping layer method, drag the Photo layer just below & a little to the right (important!) of the Path layer until you get a horizontal blue bar that is indented slightly & drop it there. You can set the stroke width and/or color of the path layer as you wish if you want the stamp border to show up.
Both methods are non-destructive -- the photo layer is still full sized.
stamp.afdesign