I can see why it's bad. It definitely needs improvement, and in the worst way. You started off with dialogue, which isn't a bad thing, but it needs to be balanced with description. Setting, colors, smells, sounds, etc.
A good goal to keep in mind is have a minimum number of words per chapter. It can be a great help in the long run, and a good number to chapter ratio will draw in some readers.
Also, don't be afraid to use words you haven't used before. And keep a dictionary and thesaurus on hand.