Smoothing Rough Edges

Adapted from teachtutorials.com  (click to follow tutorial with example imagery)

[1]- Start by saving and opening a merged COPY of your image that is to be smoothed.
          You must delete your background to isolate your image to be smoothed.
          Positive Negative Space Project:  Click Select Menu > Colour Range
          Use the eyedropper to click the background > click OK (this will select the background)
          Click Delete to discard your background
          Click Select > Deselect

[2]- Ctrl+Click on the single Layer in the layer palette.

[3]- Now click on the Channels window and create a new channel.

[4]- Fill the object with Alt+Backspace.

[5]- Now go to Filter>Blur>Gaussian Blur and set the radius to 5.4 pixels.

[6]-Now go to Image>Adjustments>Levels and set the following 

          Input Levels : 139-1.00-160.

[7]- Ctrl+Click on the Alpha1 in the Channels window.

[8]- Now go back to the layer palette and create a new Layer2, and fill the object with 

          Alt+Bkspc.

[9]- Now make the original Layer1invisible by clicking the eye next to the layer.

[10]- Now your image has been smoothed and you’re done.  

          Save a COPY of your new file.