You can replace the photos with your own by going to the 'Customize Page' step and clicking on the photo. Select the 'Style' button and select 'From File Store' to select photos you have previously uploaded from your local disc. Before you upload your own photos, make sure they are in JPG or GIF format and not too large.

You can edit the caption for each photo using the same 'Customize Page' step and clicking on the caption.

Once you have inserted your own photos, you can use the Edit button to re-size, and crop the images.