Installer - Simple Program Installer - Feedback?

Hi codester authors and buyers 👋
Just released my first script, "Installer - Simple Program Installer PHP"

Looking for some feedback.
Ideas, questions, you name it!

The script includes 3 themes, so it would be $2.66 per theme, around 8 total which isn't a bad price at all. Unlike most(if not all) installation scripts on codester, this is modified by editing the form itself, you don't have to write ANY additional PHP code.
I want to provide solutions that anyone can use, and do it in my own style. Feedback will help me build a better product.

I look forward to your replies. SuperDev 🎉