Spooning Sex Position
The Spoon is simple, relaxing and intimate. You both lay on your side, one behind the other, facing the same direction. The partner who lies behind can reach around and stimulate your clit. When the partner in front raises their top leg, this provides even more open access. And of course anal and vaginal penetration from behind work seamlessly in this position with a strap-on, fingers or a sex toy.
Reverse Missionary Position
As the name suggests Reverse Missionary position is missionary - in reverse. In this case, the partner on the bottom would likely don a strap-on, while their partner takes the top position. Either one can straddle the other and change leg positions for different angles of stimulation and penetration.
Rocking Horse Position
I reckon any legs-over-shoulders sexual position is a winner but this is particularly true for the Rocking Horse. In this position, one partner lies on their back putting their legs over their lover's shoulders whilst the other kneels and thrusts with a strap on. The position allows deep penetration and is known to cause explosive vaginal orgasms.
Now, Go Make Up Your Own Positions!
The narrative for girl-on-girl love in porn, pop culture, film and literature isn't always shaped by the people who actually engage in this kind of play in real life. In other words, a lesbian sex position can be any sex position that works for you and your partner. So, go ahead and use the positions that work for you and your partner - and feel free to experiment.