I dunno if you guys have seen the trailer for Ghost Recon Future Soldier Live action but theres a few scenes where the soldiers cloak in order to get past enemies.

https://www.youtube.com/watch?v=sGPf_h0pLzU

Its at 59 seconds, 1:13 minutes and at the end when they disappear (1:55 minutes)

My model is already textured, so how would i create this effect??

https://prntscr.com/3nphjf

https://prntscr.com/3nphud

https://prntscr.com/3npi23