Banners - Round 1 // Challenges 13, 17, 18

[beeej]

It seems that banners for challenges 13, 17, and 18 went amiss. Below the cut(s) are banners for hsapiens, winterfish, aliline_, sanami276, ender839, and avidrosette. Our apologies for not keeping closer tabs on banner posting. *adds this to list of things to remember next round* :)

Please let me know if I missed anything.