1. Check if all images are named correctly.

2. Check the positioning of the body parts in the viewport. For example: the right hand should be at the right side of the character not at the right side of the screen.

3. Don't forget to press the sync vertex button in the beginning. After doing that the images shouldn't get mirrored or rotated anymore.

4. Make sure you only use images which are not subdivided yet. If you are deleting a step (e.g deleting the rig created by the add on by hand) make sure you reset the image planes (no subdivision) as well, otherwise they will get subdivided again.

- the armature needs to be selected and set to EDIT MODE

-select the bone on which you want your drawings to be parented to

     example: select the head bone

                    click the "create grease pencil slider" button

                    now you can draw your facial expressions as keyframes in the timeline

                    the drawings will follow the movements of the head Bone