Good luck with this, @ria_rose.
It is a good method in principle since it will, by definition, often keep you in a trend for a good period. But the problems arise when the market is ranging and not trending, or is even just lolling around doing nothing much at all. Again, by definition, the short MA will always be on one side or the other of the long MA even in a stagnant market, and there is no clear way to know whether each cross is the start of a new move or just another costly wobble. Since markets trend for only a small part of the time then fake signals are a curse of this type of straegy.
One of the most difficult decision areas with many methods is when to exit a position. What are you doing about exits with this one? Are you also planning to use trailing stops as in the HLHB method? I think you could also consider adding a target level such as based on a S/R level from a higher TF.
It is also worth considering the week ahead. For example, when the week ends with the NFP you are more likely to see some fairly short bursts of action in both directions rather than a major trend move of several hundred pips in one direction. You could, therefore see a series of crossovers that offer potentially 10-50 pips per move and that may be more rewarding than just a trailing stop. But, as we know, every move is different and there are many other factors that could cause a decent move this week in spite of the NFP. I guess it all comes down to whether you are treating this as a mechanical system or a discretionary method.
This method is very close to the core approach that I have used for decades (only with EU) but not as a simple enter/exit/reverse on successive crossovers - we all know that does not work consistently. But I do use a similar method for entry and continuation but with discretionary exit.
I’m looking forward to seeing how this method works out for you!
PS: My variation of this has not yet given a sell on EU and is currently neutral. So I am personally keen to watch with you how this works out!