Hi there AhsanQureshi,

Instead of starting a new thread, you need to just update the original thread. All you do is click on the thread and then under that last listing there's a button that says "Post Reply". Just click on it and you can add what you want. You're basically replying to your own thread in order to add updates, etc.

I'm not sure exactly what your asking. Are you referring to the edges looking jagged? Or are you asking how to make sharper corners and edges?