Flickr Favorite #9 / by Let It Be Raw

This weeks flickr inspiration is: multiple exposures

1.
Double Exposure

2.
Double exposure #1 (05.2009)

3.


4.
holga

Multiple exposures are a lot of fun and can make an image really interesting. I haven't done many, but the ones I have done I plan out. Whenever I try to do a random double exposure, it doesn't look great. Does anyone else have experience in doing multiple exposures?