Firstly I created a composition with my footage of Callum jumping and my blank picture of the scene without Callum in it. Then I downloaded some free smoke footage that I accessed through a YouTube tutorial. After uploading the smoke and adding it to my timeline/composition, I right-clicked the footage and went from 'time' to 'time stretch' and changed the 'stretch factor' to 45 - making sure it still says 'layer in-point'.
After that, I clicked 'effect', 'channel' and the 'shift channels' and changed the shift channel Alpha to Lightness. I then changed the colour matting and changed the tint to a light blue to add some colour to an otherwise boring grey shade of smoke. I then had to change the mode to 'Screen' on the smoke effect and added an 'expression' to the rotation. I then duplicated the footage as much as I needed to and moved them to cover Callum.
Invisibility Effect
To create this effect I uploaded the footage of Katie walking in and dragged it onto the timeline to make a composition. I cropped the scene to where Katie appears at the edge of the room but just before it, making it my clean plate. I brought in another copy of the same scene again (uncropped) and split that layer.
Then I could start to use the pen tool and draw it around Katie, repeating this as I go through the keyframes as it would make them invisible once the effect was completed.
After creating the mask, I changed the opacity so it looked like she was gradually appearing out of nowhere.
Heating Pot Noodle Effect
To start off, I clicked on 'Layer' and changed 'solid' to an orange shade. I then kept masking around my hand in each keyframe, like I did on the invisibility effect, and then I reduced the opacity and feathered it to make it look more realistic.
I made the opacity stronger when the hand hovered under the pot noodle so it gave the impression of it heating up the pot.
