Why short a stock that is under a dollar? I personally don't get it. If you short with $10k, the max you'd ever make is 10k. But what if the same stock has an upside to it due to news, you could be wiped out in a heartbeat, especially given this is OTC - no Pre-market and no after-hour trading to try and get out on time.
I would rather not get involved in shorting at this level if that is the only way to play it. There are plenty of other opportunities out there.