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Thank you so much, @jamtaylor, really appreciated you picking the jumping spider pick as one of the winners! :D I wish I could tell you the details, but I don't remember them all now. My best guess for the first image is that I was using a reversed lens (probably a reversed 28mm lens) on a Pentax K-5. This means I had to get really close to the subject. The background was just coloured paper, the flower was a dandelion, and the spider was not harmed in the making of the photo (or after), and it didn't harm me either. The lighting, I think, was created by one or more flashes, diffused by a soft box and/or white paper. :)