There have been a few of this same situation over the last few weeks (Trippier, Buonanotte) but Fernandes seems to be a serial offender (amongst many things).
I would love for the FA to ban him for 5 games, this kind of behaviour would stop in an instance. Whilst the referee hasn't been conned, it is still an attempt to decieve the referee through simulation.
The additional 10 rolls and ankle clutching before springing up as an opportunity presents itself just leaves a real sour taste and will only further influence kids at grassroots trying to imitate their hero.