This is a cool VN so far and looking forward to more. Notice the sprites only have one set of clothes so far even when scenes describe them wearing something different which is understandable. Not sure of what you use for drawing, but adobe illustrator lets you basically draw 'layers' onto the sprite. So for instance you can draw them naked, then another layer of normal clothes. This lets you just switch between what sprites wear with a click. Just a tip which might help. Do some drawing myself.