title: How do I make a trail behind my character in SpriteKit?
body: <p>I'm using SpriteKit (with Xcode 6 and Swift) and I have a character on the screen that I move around with on screen joysticks, and I want a little trail to follow behind him. How do I do that?</p>
  
  <p><img src="https://i.stack.imgur.com/UMom1.jpg" alt="enter image description here"></p>
  
  <p>How big would my image need to be, and what would it need to look like?
  Also what would I use in my code?</p>