1. Use 'File', 'Open' to load your file (or drag and drop).
2. To resize Select 'Layer', 'Resize' in both width and height enter 50 for 50% reduction or 20 for 20%.'.
3. Move your image by click and hold while dragging into position over the template.
Once you are happy with the size select file save, your layout will be save to you download folder.
When printing ensure scale is 100% and fit to page is unselected.