Saying that drawing lesbian sex is hard, I see. I would offer some links showing the lesbian reference if it's okay, and although I am confused saying that you would do the rock paper scissors but cannot do lesbian sex because it's difficult, perhaps maybe you can do the strip rock paper scissors with both girls but maybe include the lesbian embrace for a secret ending for a start, I think.
Anyway, looking forward to the next update in the block saga that involves sex things, like the handjob, for example, including the 2nd girl, and hope you make the strip rock paper scissors someday but with two girls in it.