Hi Aunt Bobby,
I had to actually attempt this in photoshop so I could give you some tips to try out for yourself. I also wanted to add that your artwork was so playful and well done, Aunt Bobby. If you have any other questions about the process, I'll try to help.
1. Background: Glass to alter
2. Background Copy: Duplicate Background
3. Layer 2 Copy and Paste: Paper Doll Image onto Glass
4. Rectangular Marquee Tool: choose one Paper Doll
5. Layer 3 Copy and Paste
6. Layer 3 Magnetic Lasso Tool: carefully 'lasso' paper doll around edge
7. Layer 3 Cut: this will give you the Paper Doll image with no green background
Depending on where you want the Paper Doll, you can add the line around the top of the glass over top of the doll (this would be a new Layer). You would use the paintbrush with a fine line.
Important Rule: always Save, Save, Save! Every time you wish to change something in the image, another layer should be added. In this way, you can always delete the layer if you don't like the effect. Hope this helps, Aunt Bobby.
- chameleon
Make a Wish . . . Make it Happen!