Nilay, it looks a bit panned in. Maybe try holding Shift while resizing stuff(not for 2020, screwed me up initially when I had an upgrade). What Yash said is to be noted too, the render must fit in the BG as if it was already there, and to be honest its quite easy, but complicated at times too. With experience and practice its gonna be way easier.
One thing I need to remember that I don't need to make this in a hurry which I have done. I would first adjust the render accordingly then resize it. And tbh I am not so much comfortable with using blending tools so I just messed it up with texts. Thanks for the advice @AliB . To get advice from a legend like you is so valuable to me. And thanks to you as well @Yash.[DOUBLEPOST=1592933267][/DOUBLEPOST]@AliB if you don't mind then will you please give your views about Babar Azam's wallpaper as well ? Personally I feel I made that one a bit better.