Best way to demo/explain is through vid I guess:
Each bar is a layer in Photoshop. I just organized the layers in groups (phone hand, bobba hand, mouth groups, etc) so it's easier to find and control/adjust/edit. The length of each bar is for how long or however many number of frames the layer is visible. Devil is in the amount of detail you decide to include. This Pikamee gif was just supposed to be her just laughing and saying "calm down" (so maybe a handful of layers and some text) but my dumbass brain had an attack of autism and started asking
"what if she's drinking milktea?",
"what if she's looking at her phone?",
"what if you show a bunch of autistic shit scrolling up from the phone?"
There's very likely better and far more efficient ways to do this shit in other apps/software but it's the shit that I know how to do so... eh.