Mikael: One thing I've noticed (as I would) is that your balloon placement
can be a little unclear.
(You know I'm a fan, so I hope you'll take this in the constructive spirit
it's intended!)
The convention in lettering is that the balloon tail should, wherever
possible, point to the mouth of the speaker. If you can get it to end in
dead space near the speaker's head, so much the better.
In a couple of panels ...
... it's not clear where the dialogue is coming from, and in one ...
The tail is pointing at something other than the speaker entirely!