First choice is to use JavaScript validation to find out invalid form submits, Some users may disable JavaScript, so its always recommended to do server-side validations.
Maybe try moving your mysql query into your else currently you insert values into the database regardless of whether you have form errors or not. Also you will need to secure anything that you are inserting into your database. Its an SQL injection field trip right now ;).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.