Want to know what should be the size of center imgae to be placed

hello sir i had prepared the instagram collage and i get 52% accuracy . I feel it is due to the you had not provide us what should be the dimension of center image . so what is the dimension of the center image to be placed

hey @tanujvats0002_111433f919bfdb0c ,
the center image needs to be of the shape , 120x120

hope this helps.

how i should improve its accuracy

I am getting 53% accuracy

hey @tanujvats0002_111433f919bfdb0c ,
try changing the center image size