“A Real Programmer can write Fortran in any language.”
You now know enough to be able to write recognizably idiomatic Mythryl in Mythryl, and to write useful applications.
If, after the first sequence of tutorials, we were like music students who knew how to keep warm by burning Stradivarius violins, we are now like music students who know how to make music with a Stradivarius violin — by beating time on it with a stick.
In the next sequence of tutorials, we shall investigate the world of possibilities opened up by playing notes on that violin.
But first, this is an excellent time at which to pause for a little learning by doing, consolidating what you have learned so far and building some of the cool programming projects that have been brewing in the back of your mind.