Do yourself a favor and forget about the standard message.
We are surrounded by online dating sites and weird but highly effective dating apps.
Look at her profile picture and give her a compliment that you can only give her and not to any other girl.
In case she has blue eyes, blond hair, a red top and a friendly smile you can use all those elements to design your perfect compliment.
Tell her exactly why you love this fact about her and share your own interests and experiences with her.
Provide her with an answer to the question “why should I reply?