use low res sample image, using a weight of 0.8 is enough,
don't have datasheet for selfie :(. maybe next,

use "view with black sky and earth planet become background" for best maybe

use this for make dust effect
fine grey powder floating around foot, dust particles disturbed by movement motion, slow settling dust cloud around, weightless dust suspension in zero atmosphere,

and earth for showing earth on background

make nasa style just use effect fisheye , distort, blur etc or hasselblad camera XD