It is actually quite simple. I am looking to create an icon for my website that will, when I "Add To Home Screen" will show up instead of a screencapture of the site. What are the requirements for that to happen?
I use an app to make "nice" icons out of my bookmarks - "Touch Icon Creator" ($.99, USD). With it, you can use any picture in your camera role to create an icon for a URL. It also lets you set links for e-mail addresses and such.
That's just one suggestion of what I do. Hopefully, someone will have another (maybe better) idea...
I ended up getting it, just needed the specs for the file on the web site. I already had the icon, I just wanted to make sure, when one goes to my website, it pulled that icon to the home screen by default.