[Mike Clasby]

This tut by Adobe has exactly What you want:

Keep motion in perspective

Adobe Studio, Tips and Tutorials
https://studio.adobe.com/us/tips/main.jsp

You need to sign in or register (It’s easy)

Keep motion in perspective – pg 3
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=100241&xml=aft65cornerpin

[Mike Clasby]

This tut by Adobe has exactly What you want:

Keep motion in perspective

Adobe Studio, Tips and Tutorials
https://studio.adobe.com/us/tips/main.jsp

You need to sign in or register (It’s easy)

Keep motion in perspective – pg 3
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=100241&xml=aft65cornerpin

[Mike Clasby]

Since you’re using the Stroke effect to animate you signature, I assume you using a mask to lay that stroke on.

Highlight and copy the Mask Shape from the layer with the stroke, then past that to the position of the layer with the hand image.
If the timing not right, dragging either of the end keyframes to match the stroke movement, the position keyframes should be roving, mine were on a quick test.
You might have to move the anchoe point of the hand layer to get it to be where you want.

Hope it works for you.

[Mike Clasby]

Also Adobe has a tut that should help:

“The 3D picture trick”

Adobe Studio, Tips and Tutorials
https://studio.adobe.com/us/tips/main.jsp

You need to sign in or register (It’s easy)

At the bottom of page one, “The 3D picture trick”.
https://studio.adobe.com/tips/tip.jsp?p=1&id=100827&xml=aft65sd3dtrick

[Mike Clasby]

Thanks for sharing, lots of fun picking things apart and then “Why didn’t I think of that?”. After a few months and tweaks I’ll probably feel I came up with them on my own (or at the very worst simultaneously).

The Anvil guy shares nice.

[Mike Clasby]

Looping

Basically you set two keyframes for your animation, then add this loop expression to the keyframed property:

https://www.creativecow.net/show.php?page=/articles/ebberts_dan/layer_looping/index.html

For details on looping in AE see Dan Ebberts “Animating A Walk Cycle” (see “Intro” comp for looping variations), where he goes covers the loop variations, including setting a keyframe 1 back from the last one, then looping from there, so you don’t get that little stutter from the last frame in the animation repeating itself.
But that shouldn’t be a problem with you text loop.

Do the same procedure with your moving still. Have fun.

[Mike Clasby]

Looping

Basically you set two keyframes for your animation, then add this loop expression to the keyframed property:

https://www.creativecow.net/show.php?page=/articles/ebberts_dan/layer_looping/index.html

For details on looping in AE see Dan Ebberts “Animating A Walk Cycle” (see “Intro” comp for looping variations), where he goes covers the loop variations, including setting a keyframe 1 back from the last one, then looping from there, so you don’t get that little stutter from the last frame in the animation repeating itself.
But that shouldn’t be a problem with you text loop.

Do the same procedure with your moving still. Have fun.

[Mike Clasby]

expression links

https://www.motionscript.com/

https://www.jjgifford.com/expressions/

https://aenhancers.com/

https://www.adobeforums.com/cgi-bin/webx?14@@.ee6b2fe

And I recall Mylenium had some expression stuff but I can’t get through to his site:
http://www.Mylenium.de

[Mike Clasby]

expression links

https://www.motionscript.com/

https://www.jjgifford.com/expressions/

https://aenhancers.com/

https://www.adobeforums.com/cgi-bin/webx?14@@.ee6b2fe

And I recall Mylenium had some expression stuff but I can’t get through to his site:
http://www.Mylenium.de

[Mike Clasby]

The best way to make long smooth curving objects is with the pen tool. If you feel pen tool challenged, it can be intimidating,
then I’d try drawing a long skinny rectangle with the Rectangular Mask Tool. Then press “V” on the keyboard to get the “Selection Tool” (your regular arrow cursor) back, and select one vertex (corner dot) of the rectangular mask. You can click on the vertex or draw a little marquee around it to select only one, it should become a little solid square. Now click “G” on the keyboard until you get that little wedge looking “Convert Vertex Tool” (or get it under the pen tool). Click on the selected vertex and the handles should appear. Drag the dot at the end of the handle and drag it out to make the shape you want. Select another vertex and do the same (still with the Convert Vertex Tool) until you get that long thin curving vector shape you want.

Now “V” to get you original Selection Tool, and double click any vertex of the mask. This should select the whole mask and give you a little transform selection box like in Photoshop. Grab the side of the box and drag it out to as large as you like. If you want it to expand proportionally, Shift drag a corner.

Alternatively, if you like the smaller curved rectangular shape, you can fill it with a color (Render Fill) then make it any size you want with the size parameter for the layer (best with only one mask per layer unless you want to change the size of all other them at once). Just be sure to press the little “Continuously Rasterize” (the second little box over in the Switches column of the timeline – looks like a little sun) button to get clean vector shapes.

Good Luck.