I get alot of request from people to make their individual, group's, or families coat of arms, escudo de armas, or heraldic device. Unfortunately I don't do any custom work, but you can use this template to make your own.

Below are the texture and matching opacity map both sized at 512x512 pixels. I recommend when you finally submit your product you resize both the texture and the opacity map to 256x256 pixels. The reason I left it large is to make it easier for you to fill in the shield portion with whatever device and colors you want.