Need help with logo/banner

Hello. I own CriminalCraft. I need help making a banner. I made one in Photoshop, and made it into a GIF, but it's not the standard i want it to be. Here are a few basics of CriminalCraft

We are a hardcore PvP server.
We are a Factions server.
You can vote for diamonds

Anyone that can help me out with this would be a great help. Thank you!
-BennehT
CriminalCraft Server Owner