Photoshop Lessons - Making a Vignette
Three easy steps to make a Vignette over a picture:
1. Open main image
2. Create a new solid color layer
3. Click the Elliptical Marquee Tool, change the feather to 25-200, depending on the size of the pictures
4. Draw out the marquee selection over the colored background
5. Hit delete
6. "Save As" a JPEG to flatten the image.