Combining Two Photos into One Page in Photoshop Elements

Finally, you can switch back to the text tool, to add the words "before" and "after" below the photos, as shown here.

Tip: If you want to reposition the text before accepting it, move your cursor slightly away from the text. The cursor will change to a move tool cursor and you can press the mouse button to move the text.

Last but not least, don't forget to go to File > Save and save your document. If you want to keep your layers and text editable, use the Photoshop native PSD format. Otherwise you can save as a JPEG file. Visit the links below to learn more on saving your files.
• Saving Images in Photoshop Elements
• Which Graphics File Format Is Best To Use When?