Here's a simple scene part list:
- Hand movement: you can use Timeline or a Cycleforce
- Fluid: hazmhox fluid generator or another CUA (you say you can do this already)
- Erection morph: there's a few male morphs for that, possible built-in already
- Button for cumming: UIbutton with a triggers to set stream for the fluid generator or whatever other CUA you use
- Moaning: there's VAMMoan, or MacGruber's Life, etc. Can be set as a trigger when you press the button above
The key is to start simple; make a very basic scene with 1 part, then add another, and so on.
Here's a quick guide for a very very very robotic wank to get started:
- Position a hand in front of the penis. Don't bother with grabbing it, just a open hand in that area;
- Add a cycleforce, link it to the hand, and give it some force. Position it so that the force is taking the hand in the intended movement;
- Add the Fluid CUA, you say you already know this part, to the penis or close to it;
- Add VAMMoan or another to the male person's plugins;
- Add a UIButton with a trigger for a stream or whatever the Fluid needs to shoot fluid particles;
- Add another to trigger a orgasm from VAMMoan or another you use;
Ok, this should get you a really stiff robot-like male pretending to jack off. Press the button and semen shoots and the robot orgasms. Pretty crappy, but you get the idea and then build up from there.