Q&A: How do I create a reflection in a glass?

I am a beginner in Photoshop but am doing a wedding album for a friend and I want to superimpose the photo of the bride and groom onto a picture of a wine glass as a reflection. How would I do this in Photoshop 7?
Tom Storm

This type of compositing challenge can be solved with help from the Layers palette, the Transform command and some gentle layer blends. Start off by opening two suitable source files of the happy couple and a wine glass.

01
Copy and paste
Go to the shot of the couple and use the Rectangular Marquee (M) to select them. Hit Edit> Copy. Go to the wine glass image and Edit>Paste the couple onto a new layer. In the Layers palette reduce the Opacity of the couple’s layer so you can see the glass too.

02 Move it
Select the Move tool (V) and place the couple over the glass. Edit>Transform>Scale the shot so they fit in the glass. Grab the Eraser tool (E) and pick a soft-edged brush from the Brush Preset picker. Erase any parts of the couple layer outside the glass.

03 Blend it
For a more realistic reflection, in the Layers palette make the couple layer’s blending mode Lighten. This lets highlights in the glass remain solid and preserves details. Curved highlights blend the composited photo with the glass’s shape.