Coin & Flour is super cute~
I am reading through it now!
In case you don't know, font choice in a comic is very important. Normally, comic and manga artists use a font that is all uppercase. It makes it a lot easier to read, which in turn makes the whole comic look more professional.
It might seem like a little thing to nit-pick, but font can make, or break, a comic. The script font you are using for most of the comic is hard to read, especially in the tiny speech bubbles you have.
I am going to use one of your pages for an example:

See how the dialogue from the elevator attendant jumps out at you? It does that because of the uppercase font. I would encourage you to find a good uppercase font, and use it in the future. Or, even better, go though and change the font on your comic. You will notice a big difference.
If you need to find fonts, I recommend
dafont.com 
Make sure you modify your search for "Public Domain" and "Free" fonts. When you sell your comic (I think you should, it's awesome!) you want to avoid potential copyright issues.
Keep up the good work! I will be cheering you on! <3