Create a Glass Pane effect - Guided Edit

Select Guided > Fun Edits > Glass Pane.

Click Add media to import a video clip or a photo that you want to work with.

Ignore if the video clip or the photo is already present on the timeline.

Select the appropriate option to import media.

The clip or the photo you added is stored in the Project Assets bin. 

Drag-and-drop the media on Track 1 in the timeline.

Drag-and-drop the same media on Track 2, exactly above the media on Track 1 in the timeline.

Click the Graphics icon in the right panel.

From the Graphics > Video Overlays panel, select and drag one or more matte over clips and drop it on Track 3, exactly above the Track 2 media.  

Click the Effects icon in the right panel.

From the Effects > Video panel > Keying category, drag the Track Matte Key effect, and drop it on the media on Track 2.

In the Applied Effects panel > Track Matte Key section, do the following:

• Select Matte as Video 3.
• Select Composite Using as Matte Luma.

To use additional effects, click the Effects icon in the right panel. 

From the Effects > Video panel > Blur & Sharpen category, drag the Fast Blur effect and drop it on the media on Track 1.

In the Applied Effects panel > Fast Blur section, change the Blurriness properties as required.

Select the media on Track 1 and click the Adjustment icon in the right panel.  

In the Adjustments panel, expand the Temperature and Tint section. Select an adjustment each in the Temperature and Tint categories.

To see the rendered output, click Play.