how to have your minecraft skin in a custom thumbnail for youtube

[thomas055]

i know how to upload custom thumbnails, i know how to make them but i don't know how to put your minecraft skin in it, like this:

 

[tonnycassidy25]

screen shot bruh,press f5 to change camera angle and press f1 to remove gui,and press f2 to take screenshot

 

[tonnycassidy25]

i mean camera view