[Grace Themes]

Hi William Ackah,

To change the logo image size
Go to the Appearance -> Editor -> functions.php

at line no 35 find the below code and change the width and height of logo image

add_theme_support( 'custom-logo', array(
	'height'      => 50,
	'width'       => 100,
	'flex-height' => true,
) );

Then re-upload new logo image from WordPress Customizer

Regards
Grace Themes