Using watercolour-style art in comics is challenging, since you can't really make the characters look dynamic. I suggest you exaggerate the effects a little bit to combat that.
For example, when the king shouts in the prologue, draw the spit a little bigger, so their more apparent. And when Tarrek was reprimanding Sami in Chapter 1 Part 8, he would look angrier if he'd bent his legs a little.
Another thing is the text. It's clear and readable, but sometimes you forget to add a punctuation mark at the end of a sentence or capitalise the first letter of the sentence. Maybe I'm nitpicking a little bit too much, but I feel small flaws like this need to get their fair share of attention too.