1. Login to your dashboard. Navigate to "Layout>>Edit HTML" from your dashboard. Make a back up of your template before you do any changes in the template.
2. Now, expand your template, that is, make sure that you have a tick mark in that "Expand Widget Template". Now, do a search using "CTRL+F" for the following line, if you want to show the button below the title of your post:
tweetmeme_url = '<data:post.url/>';