Imma review this leike usu cuz it seemed to work. :3
Pros-
Actual background
Cons-
Background is badly resized
Sprites are un-proportional to the background
Text balloons are still bad
neutral-
Humor is decent
All you really need to do to fix this is make sure you don't resize the background next time. instead simply change where the "camera" is so you can have a large area without suffering from a bad resize.
Another thing you might want to note is that if you double the size of a sprite/background/etc. it will be "life size". meaning it will look the same size as when you played the game. But remember that if you resize one thing you have to resize everything else the same way unless you want it to be bigger.
And about the text balloons, just use the rectangle tool, or the eclipse tool. I'm not sure what program you use (though I'm assuming Paint) but on most you can choose the size of the outline. Try to keep it small. You want to allow the viewer to still be able to see as much of the background as possible. Other wise it looks like you stuck a huge billboard in the way.
This better help as it is the longest review I've ever given a single comic.