Here is the standard combination of stars you can use to execute the A Site. The Gravity Well towards Heaven is a great way to make it difficult for rotating Defenders to assist their teammates easily on site. You may also use the Gravity Well behind Generator or Green Box.
Easy
Default Lurk / Control For A Main Nebula
Keep Defenders guessing, or simply force them to use utility to gain information towards A Main, with this default Nebula. This allows you to also play in Wine if you choose to cross over.
Easy
Simple B Site Post Plant Corner Gravity Well
Here's a simple, but effective B Site Post Plant Gravity Well.
Medium
Aggressive Catwalk Push Nebula
Use these Nebula to take space in mid, push up Catwalk, and either pressure or push into A Site through Tree with your team.
Medium
Standard B Site Execute Nebula Smokes + Stairs Pull
Here are the default smokes for a B Site execute. Follow how the smokes are placed on screen to best limit the Defender's options.