There are several businesses, including Pickguard Heaven that can make a custom guard for you.
You will need to send a tracing, or the original guard to be used as a template.
I've had good luck with Pickguard Heaven (Chandler Guitar) and WDMusic.com
All the best,
ESP Ltd B-1005, ESP Ltd Surveyor-4, ESP Ltd B-4Z (inbound) Squier VM Fretless P, Squire Affinity Jazz V Fretless (in work), Mesa Walkabout Scout