It's not at all hard to make a Ragnarok Online Emblem.
All you need is GIMP and know how to copy and paste. The only other thing is to know what color is Hot Pink (Red: 255, Blue: 255, Green: 0)
Next, Any Area you don't want seen, put in that Hot Pink Color.
Most of the time, all you need to do is scale an image down to 24x24 px and in Bit-Font put the Initials you want.
As for everything else, It's not hard at all to make Geometric Shapes. I'm pretty sure sometime in your lives, you've taken an Art Class or a Geometry Class.