When we go to develop a working real life software remember following points and go ahead !!!

=> A software is the thing which automates something.
Steps:

+ Think your need.
+ Write your need.
+ Get info about available inbuilt functions to complete your need
+ If you cant get above use resources like google
+ Still if you are not getting develop your own
+ Develop whole code and according to that minimum UI that needed
+ Improve UI
+ Find Bugs
+ Correct Bugs
+ Find the points that worst user of your software can do it with your software
+ Protect your software from above one.
+ Put the locks to your software you want.
+ Do final test.
+ Release it.

Happy Software Developing