Hopefully, you're starting to get the hang of it. So far, all the examples have been one measure patterns. In this next example, we use a two-measure pattern that is a common one. In fact, this is the default strumming pattern for "Fast Rock 1" in the Groove Builder:
Set your loop count to "Forever" and try to strum along.
If it's a struggle, slow down the tempo and re-play it. If it feels good, include just the groove in the playback and play along with just the groove. Try increasing the tempo if everything's cool.