This is a simple addon for Rogues and Feral Druids (currently with no customisation) that displays an icon in the centre of the screen when you get the 'You must be behind your target' error for example when using Backstab/Ambush/Shred/Ravage from in front of the target. Currently, if you want to change the image or the position you'll need to edit the source directly.
Remind you to reapply your poison as well as restock your poison. Note: This is my first addon coded from the scratch so it will be a complete work in progress. If anyone has any helpful tips i am all ears