Possible EW ABC pattern on S&P 500 future

I spotted a 5 wave wedge pattern near the near of the previous up trend which tells me there could be a possible Elliott wave ABC pattern forming. The B should not break the start of wave A because wave A is 5 waved. It would be possible to short wave B to wave 5 for a nice risk reward ratio. Aim to short at 50 or 61.8 fib of wave A.