**remember to draw the seperate blinks if you're doing a blinking animation, though it's not really neccesary for simple bouncing pixeldolls/hearts/whatevers.
Sorry if this is more simple than you're looking for.
first, manual moving of the image and stuff
So go to "window\\\\" and open up the timeline. Then select "Create Frame Animation."
It should look like my first screenshot, except with only 1 frame.
If you compare that image to this one:
You see that I just took it and lazily moved the top part down a bit (this was only a bouncing icon). To do so:
I duplicated the original frame
using that button. Then, I duplicated the layer with the pixel doll on it, and moved the doll down a bit using a select tool or something. The problem is that each time you do so, the new layer--layer 2-- (with the newly moved pixel doll) will show up on frame 1 as well (and frame 1 affects all the other frames), because frame 1 does that for some reason. Granted, it might be my "dispose" settings but idk really
mad I just hide layer 2 on frame 1, and then unhide it on frame 2. And so on.
Yeah I kinda suck at this ok so that's basically it. Then you go loop it and add as much delay as you want (it goes a bit slower than it seems sometimes, so I mostly do 0 delay for everything but the first/last frame for a bit of a pause). After, File > Save for web >save as whatever and get whatever settings.
Diff method:
There's also this other button beside the duplicate frame button. The tweening button.
Just duplicate your first frame (bouncing icon: full height, or blinking: open eyes), and then unhide a prepared last frame (bouncing: shortest point of the bounce, or blinking: closed eyes), and go to the first frame. press the button, choose the number of frames, experiment, etc. My photoshop does this preview thing where they look all transparent, though it doesn't look that way in the actual gif. Well, not really, at least (you could go to file>save for web's preview to see it, albeit a bit faster than it actually is.
idk I don't use it often because I find the effect kinda odd (but idk man, whatever floats your goat). Though, it's probably easier for blinking and whatnot to use some tweening.
here's a bouncing thing tweened:
And here's an old pixel icon that I tweened for an example (blinking):
For a comparison, the manually edited frame ones:
pixel icon
bouncing pagedoll
I personally prefer the manually done ones, not the tweens, for pixels, at least, but once more, whatever floats your goat.