The easiest way that we can think of to do this is to exclude the social sharing buttons with the settings for excluding the specific articles or categories. This will remove all the social sharing buttons, but then you can easily add them back in with either easy-tags or the JFBCSocialShare module on the specific articles.
If you would like to do the easy-tag and want to get some of the styling that we already provide, put this div around the easy-tags.
<div class="scsocialbuttons box_count" style="position: relative; top: 0px; left: 0px; z-index: 99;">
For the specific options available to customize the Twitter and Pinterest easy-tags with your image and text please go into the JFBConnect backend > Social > Examples section.
Hopefully this should get you started, but let us know if you need further help.
-Melissa