Looking for advice to improve my programming gig

[blackyus]

Hi! I've recently started out on Fiverr and I was wondering if anyone could offer any advice for my programming-related gig?

I will develop a small scale desktop application for you by Blackyus | Fiverr

Like many people who have posted here, I am not a native English speaker, so I am afraid that some of my wordings may sound a bit stilted.
Do I sound professional enough? How can I reinforce attractiveness? Are my packages fair? Should I undervalue them at first to attract the first few sales?

Any advice on how to improve the post or its reach is welcome!