Forum etiquette can be interesting sometimes. Not that I'm an expert on it, but double posting generally deals with a situation in which something can either be corrected in the original post, or does not add anything new to the current conversation. So a new post in rapid succession can be something along the lines of making separate posts responding to previous people one at a time when one post with multiple quotes or @ can do. If you need to correct something that you said you can also edit your post with something along the lines of "[EDIT] <insert edit to comment here so people know you've added something>". Those are the situations in that immediately come to mind anyways, and seeing a bunch of new comments on discussions with no additive substances can possible irritate others and may come across as attention seeking.
A similar type of real world analogy to this would be if you've ever seen a kid raise their hand to ask a question in class and respond with "nothing" when the teacher calls on them, that's the similar kind of annoyance that can happen with a double post.
The reason Jewel's new post here doesn't count as a double post as it's adding something completely new to the conversation that is different from her previous post. A lot of fanart topics and such do this to keep all the person's art consolidated in a single spot to reduce clutter and confusion.
Hope that clears things up a bit. Also not trying to call you out in particular GT as I don't frequent the forum as much as I used to, just trying to explain things.
Anyways, back onto the topic on hand, I love doing quick sketches like these, they're really good practice without committing a lot of time. Both drawings capture the expressions quite well! If I had to pick...I'd maybe go with the flustered one, as I feel it's a less seen emotion. Great job!
