Then press Ctrl + T (Windows) or Command + T (Mac) to use the Free Transform feature to resize it to match the ratio of the TV:
Next, use your familiar tools ( Lasso Tool, Pen Tool .) to select the area of the image outside the edge of the TV. For example, here, we will make the athlete's head and the surf boat 'stick' out:
Then, hold down the Shift button and click Layer Mask again, change the Opacity to 100% the same:
And the display of the TV will return to the same:
Next, we will proceed to add the above created selection to this Layer Mask layer, select the next Layer Mask layer:
Select the Edit> Fill menu :
The Fill dialog box displays, changing the Use to White option :
Click OK to apply changes and close this window. Then press Ctrl + D (Windows) or Command + D (Mac) to remove the selection:
Then, merge these two layers, and we will have the final image as follows:
Good luck!