Icon Templates, Editable?

[RegisteredAccount]

Okay, so I was planning to make a thread in the Creative Zone, where I would post anything type of creativity I have made or will make that aren't ripped sprite sheets or custom sprite sheets.
I have apparently gained the addiction of posting the sprite sheets as an icon first, like those custom sprite sheets that we can post the custom icon for the content inside. So I edited the Sheet Icon Template given by RTB on this page, but I don't know if we are allowed to do that.
... Are we allowed? (To edit the icon template or recolor the palette and post it for our arts?)
Thank you for taking your time.
Here's what I did;
- tSR's Original One
- The Edited One