Turn a Photo Into a Polaroid with Photoshop Elements

Apply the Texturizer Filter

Go to Filter > Texture > Texturizer. Use these settings:
Texture: canvas
Scaling: 95%
Relief: 1
Light: Top Right

This will give it the slight texture that Polaroid paper has.

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Index: Turn a Photo Into a Polaroid with Photoshop Elements

1. Introduction to Polaroid Effect
2. Make a Selection for the Polaroid Border
3. Add a Color Fill Layer for the Polaroid Border
4. Add a Subtle Shadow to the Polaroid Photo
5. Add Gaussian Blur to the Shadow
6. Fade the Shadow Layer's Opacity
7. Apply the Texturizer Filter
8. Add a Bevel and Drop Shadow to the Polaroid Picture
9. Add a Background Pattern to the Image
10. Rotate the Polaroid, Add Text, and Crop!