First draw whatever you want.

Then click on the fx of the layer with the drawing ( i hope the drawing and the background aren't the same layer =)))

Then click outer glow and using the the noise slider to a big value ( 50-100 for best effect) and then play with the other sliders. Always remember to set the color of the glow the same as the line drawing.

This is another example . Enjoy!

 

Step1 : Create an A4 document.

Step 2 : Using the ellipse tool (L) draw an oval ..set the stroke to 22 on a dark-brown color with no filling and using the width tool (shown in the image) make the shape more interesting.

Step 3: Using the pen tool draw the body of the cup , set no stroke and put a brown gradient as a fill.

Step 4 : Now draw
the handle with the same setting as the body.

Step 5: Add some light using the pen tool and a empty-white-empty gradient. Make sure you set the opacity less then 50-40.

Step 6: Add a green-yellowish gradient for the background and some white triangles set to a little opacity in a radial way to look like lights. 

Step7 :Using the text tool write your text using creative fonts.(P.S.: I hope you know : do NOT use Comic Sans...it is ugly.Just the most ugliest font ever in my opinion and others')

Step 8 : Using Filter-->3D--->Extrude&Bevel and set it in a nice and ''tiny '' way without too much perspective.

Step 8 : Add a little black-to-empty gradient

Here is the result!!!