bodywise you should continue and make everything like the white you did now
then try to work on the second round > highlkights / shades and refs
the racing seat is way to bright and the prosition is off
just tweek the position so its roughly the same as the ori seat was and make it darker (or rebrush the seat)
just hang in there , you cant brush stuff in one go , base brush (witch you are doing now) > then work on the rest
def got potential