The best option is probably to take a look at modifying the MACD sample EA that metatrader provides.

Alternatively you could take a look at one of the code generation tools available such as Forex Software - Gordago although in my experience you'll still need to code for these tools to be of any use.

You might get lucky and someone who's trying to learn MQL might just take a look. To get a good coder interested it helps if you can convince them that the method is something worth taking a look at, such as results from a hand back test, or results from a live forward test