fromwv

Focussing on consistency is more important than speed! add strength training on alternate days.. there are plenty of videos available on good posture while running.

I trained through the C25K just so I could actually run 5k. No I am training to run the 5k at a faster pace. I tried running faster when I first started training and injured my foot.
 
Try increasing your speed every other day but be careful not to injure yourself.