You have too much solder on those joints and it looks like quite a few have bridged together. This will cause short circuits between these pins. You board will not function properly and you could even damage your Raspberry Pi. Do not plug this board in until you can eliminate all the solder bridges!
Read through our solder guide for tips on proper soldering technique and ways to fix soldering problems: http://learn.adafruit.com/adafruit-guid ... ring/tools
You can remove the excess solder using solder-wick: http://www.adafruit.com/products/149
Or a solder sucker: http://www.adafruit.com/products/148
When you are done, each pin should be separately visible with no solder between them: