I recently graduated from college with a B.S. in Computer Science, and am now currently attending the same college to get an M.S. in Computer Science. I know lots of things about Computer Science and programming but throughout all of my coursework I have never had to develop a single complete application, the projects were always relatively small (~300-500 lines of code).

Basically, my overall I am about to have these two degrees and I feel like I don't know anything about software development or design; which doesn't make a whole lot of sense.

I am looking for ways to fill in the gaps in my knowledge, I would love people's advice on these questions:

1) How do you design good software? Where do you start?

2) What makes a good software developer?

Sorry for the convoluted question, but in my mind it is a convoluted situation.

Thanks

Edit

Thanks everyone for your advice.