Particles & projection

Hi TDers!
I’m working on this with TD:
youtube.com/watch?v=yRAuL3V … e=youtu.be

Still have to work on this detail but don’t know where to start from:

  • i want the particles always being close to me.
    when I am in the middle, my moves cast a shadow and the particles are on me. so i can’t translate them closer than that otherwise they will be project on my body.
    when i move towards the right side, the particles are too far from me (like in the video) and i’d need them closer.
    when i move towards the left side, most of the particles are projected on my body and i don’t want that.

what i can do considering that i can place the projector just at the same height level of me?