Drag the timeline to the middle diamond, and change the opacity to less than 50%, possibly even 0%. Select PDF as the the format you want to convert your PSD file to. Choose the PSD file that you want to convert. Use the appropriate tool (s) such as the eraser tool to clean. These will be where you change the opacity. Right-click on the page, and choose Edit Using> and select the image editor of your choice: The image of the page will open in your editor of choice (Photoshop below). Put one at the start, one in the middle, and one at the end. A small diamond-shaped button will appear, this will be used to define when the opacity will change. Then click on the stopwatch button beside the word 'Opacity'. There will be an arrow beside the layer name, click it to open a submenu.

Once you have the timeline opened, click 'Create Video Timeline', and then select the layer you want to animate, the layer with the shadow. Second, you must open up the timeline by going to 'Window', and then going down to 'Timeline'. There is no way to separate them once merged, so be careful. This will bring one of your layers into the timeline as a frame. Click on Window > Chronology to display Photoshop’s animation timeline. When animating a shadow using the Photoshop timeline, you must start by separating all the parts of the photo into layers, so that you can animate them individually. Click it Convert to image animation in the lower left corner of the timeline panel, then click the timeline menu button on the right side and click Create frames from layers.

Timeline settings adobe photoshop 2017