I had been reading the posts since many days. So took my first step to interact with any random girl to improve my game. This is how it went

I was in a shopping mall, just strolling. Saw a random girl,decided to make a move. She passed me, I turned back and walked towards her. Me: hey! She: (turns) yes? Me: I think you are cute so just wanted to say hi(almost stuttering).

Awkward silence for 3-5 seconds.

Girl: are you crazy? Walks angrily

I know I was little shy to approach. And wasn't confident Please give some review on this.