Record Yourself
It's very difficult to be objective when in the act of playing. Records yourself... walk away... come back later and take a listen to what you played. Don't get discouraged (it can be hard not to), but use it as a tool to get better. List the areas that need work and get started on dialing them in. Pick one area to work on... then move onto the next... etc. If you're working on a study song from the site use this as an opportunity to follow along with the transcription to see where you may have made a departure. Of course send it to me for my review.