Good art. Could be a bit more refined (line texture, straight lines when drawing artificial items like buildings, wonky facial anatomy) Below is a panel with noticeable wonky faces, particularly the left person.
Needs more space between words and edge of word bubble. Large text is fine, but make sure you have some white space left in the your speech bubbles. Here's the first one I noticed.
In general, webtoons made by professional studios in Korea have a lot more white space inside their word balloons to feel less cluttered.
Honestly though, I really applaud your background work! The scenery stands out far more than the character artwork itself! It's so incredibly detailed and your colour palette is an advantage in making the edges pop!