Adding motion blur

Here is a method of adding motion blur highlighted in the training book Adobe After Effects CC 2015 release by Brie Gyncild & Lisa Fridsma (Page 88). This method might be helpful in making the character slide more smoothly across the screen. 

Here is the motion blur used on the skater. This method is not really noticeable and it doesn't add anything new. However, it might help if it was to be used for projects that are at a faster pacing. 

Motion Blur from Jack Vanes on Vimeo.