Alright, so it appears there isn't a complete chapter one yet. The prologue should establish a little more of the character relationships. For instance, we see how our protagonist and the eldest brother interact, and how the eldest brother sees the father. We have not seen the younger brothers personality and we haven't seen the mother's. Introducing your characters on that big introduction page is better for after you've established them in universe, it should be a recap, not an introduction.
The only other major thing is the immense dissonance between the sudden appearance of a speaking bag, and then we cut away to something else with the castle. Even if the bag scene is to set up dialogue in the castle scene, you should linger more on the protagonists reaction to a talking bag. Walk us through it step by step as they wrestle with the unbelievable nature of such thing. That's valuable characterization.
I think setting up the importance of the bag, by having it be the first question asked by the narrative was smart. The writing created a sense character in the dad especially. Characterization is a strong suit of yours, I just think there should be more of it.
There are some places in the car ride scene where the color is chipping around certain edges. There's just white spaces. Beyond that, the art is consistent and as long as it remains that way, its easy to get used to. That said, don't get complacent, I look forward to you challenging yourself with more dynamic poses.
My final piece of feedback, is the number of times your self promotion reel appears. It's every page, which is too much. Especially if your posting one or two pages at a time. It slows the experience down, and is incredibly immersion breaking. So just put it every other set of pages or maybe as a middle and end card, not every time.
