Step 2: Choosing the Proper Tool
Find in your graphics software the way to transform or distort the highlighted area. In Paint Shop Pro, click on the Deform Tool on the tool menu to the side.
In Adobe Photoshop, from the main menu bar at the top, go to Edit, then select Transform and then select Distort.

Step 3: Stretching Out the Highlighted Area
Now, you'll see the corners of your highlighted area are marked with heavier points. Next, you'll want to drag the bottom corners, to stretch your highlighted area. Important: To do this in Paint Shop Pro, hold down Shift on the keyboard, and then use your mouse to drag out the corner points. In Adobe Photoshop, just take your mouse and drag out the bottom corners of the highlighted area (you do not have to hold down Shift). Note: In either software, the digital backdrop is in a "window" and that window should be "maximized" in order to do this step with ease. See Fig. 3a below. After dragging out both bottom corners, you'll see the floor take effect. See Fig. 3b & 3c below.

Fig. 3a

Fig. 3b

Fig. 3c

Here is the final image:

Notes: We could have adjusted this in many ways, depending on how far we stretched the corners. If you run out of room on your screen, you can always apply the effect, deselect the highlighted area, and repeat this process to stretch out your floor even more. Different backdrops will work better than others with this effect. If there isn't much of a varied design on your digital backdrop, the floor may be harder to see. If that is the case, you can try lowering the brightness of the highlighted area, making it darker than the rest of the image, which will give it a bit of a shadow effect. Also, you could add a line (such as a faint gray or black line) across the image where the "wall" and the "floor" meet, to emphasize the spot at which the wall changes to the floor. If the line appears too sharp, use your Softening Brush to blend it into the background. Most backdrops will work with ease and look great!