@Nossumy
Hello Nossumy~ you've got a cute comic. I can appreciate the colors and the straightforward storytelling.
The Cover
Composition is clear. I can read the Title but I feel it can still pop out from the background a bit more. Perhaps with a lighter outline around the title it'll pop.
The summary
Chippo realizes he is alone in the world. Follow his adventure in unravelling the mysteries.
This summary is lacking. The first sentence sould be elaborated on. How does he feel about being alone? What does he want? Why is he on the adventure? What are these mysteries?
We need a reason to follow Chippo's adventure. Right now, I don't know why I should care about Chippo or his adventures or the mysteries.
A solid summary for a narrative should give away your first act. Tell me why the story is happening up to the inciting incident at least.
The Comic's first part
The dialogue is legible on mobile, which is good. I would be careful about making the text any smaller at all though.
The art composition for action is clear and readable too, so good job there.
In terms of storytelling, you do a good job setting up the mystery of the package and then his investigating the mist.
So I would add that to your summary. Something along the lines of:
Chippo is all alone in this world. But if he's all alone, who's delivering his packages?! Follow his adventures into the mist that surrounds his home to discover this mystery delivery person.
This way it sets up a question in the reader's mind and an expectation: will we find out who is delivering his packages? I will read to find out what's in the mist.
All in all, it's good. Keep going.