For those of you who can't read my sucky handwriting-
(Emetophobic Warning! (Fear of Vomit/Throwing up)
First (Top Left)-
Dark, Hollow, Circles
These mean rage, anger, and becoming a literal savage

Second (Middle Left)
Red, Pulsing Rings
Represents Deliriousness, being Loopy, Extreme Happiness

Third (Bottom Left)
White X, Red Scribble (Could be both, or each eye the same)
White X- Upset, Extremely Sad, Sick
Red Scribble- Sick, Throwing Up, etc.
Notes: 1. White Xs are always first when in Draining Phase (will come up in Book 2 and in chapters 18 and 27 in Book 1) or when queezy or sick, with Red scribbles following if Vomiting occurs. 2. If throwing up does occur, black sludge will most likely pour from their eyes, tentacles, and monster mouth (mouth on chest) as well.

Fourth (Top Right)
White, Hollow, Ovals o/ white slits
Both the Host and Hybrid are conscious and in control, but they are trying to take over each other; Arguement

Fifth (Middle Right)
One Hybrid Eye, One Human Eye (could be either eye depending on person)
Both sides are fully conscious, not trying to fight eachother, but both are focused on something. Both could be in agreement or disagreement. In sync, suffering or benefiting equally.

Sixth (Bottom Right)
Black, Blank Eyes
Hybrid is in complete control, Human can't do anything to stop it. (?)
Could also mean the hybrid feels nothing but rage and/or is about to kill

Notes: Amount of Black dripping from eyes depends on how strong emotion o/ power over other entity is. Ex: If Hybrid isn't too excited, there wouldn't be much black, and eyes would be plain red slits. If Hybrid was feeling very sad/upset, there would be a lot of Black coming from the eyes. This could also lead to too much black being produced that the Human and Hybrid get sick; to get this out, vomiting and draining occur. (This occurred in chapter 18 with the eyes and Socks' brain feeling like Water just washed over his brain-  this is what was happening- this will occur more in the future as the gang figures out Gulvic and Ryzo's past..)

Examples-

Hope this helped some of you if you were confused! :D