creating a water rocket silhouet

[Benjamin Tattersley]

if i understand what your saying you need to make the silhouette look transparent? Also from what i understand the image is just black with no colour. First of all put a water bottle on the table. Turn off all the lights and shine a torch through it. Study the shadow cast from the bottle and you can discover what parts of the bottle should be transparent and what shouldn’t, perhaps take a reference photo for later? Then motion track your bottle silhouette, either by hand or using AE’s motion tracker, and apply data to a null object etc. Then add a black solid and use masks to change the visibility of the different parts to match your reference photo, feel free to refer back to the bottle torch method at this point. Also from what i know about light, bottles generate caustics, which can be achieved by stretching fractal noise and using vector blur to generate a more organic feel, try using bezier warp to bend these into shape, don’t overdo the caustics though, be subtle with this technique. I really hope this helps, good luck!