I think one of the most important things with a standalone picture is that, unless it's an in-joke, it needs to make sense without a detailed description. Even in knowing Paddy's background, there isn't enough being shown or said here to get across what exactly he's done...it's only in reading your artist's comments that it's clear. You'd benefit from changing the dialogue to better reflect what it is about the eggs that they're reacting to. Roison might help if she said something in her oblivious state.

As far as the artwork...the only thing that really sticks out is how Siobhan's right arm goes OVER her right breast, as if she's pulling it under her armpit. Her arm should really be behind it. On a positive note, facial expressions are solid as always...I almost wonder if the picture would benefit from seeing Paddy's face as well, though that depends on how well you feel his dialogue drives the point home regarding his mentality.