ive recently bought a GTI escort and when i first got i thought it needed a good clean as the paint looked slightly cream instead of white so i used some G3 (by hand) but i forgot to use water with it

i used 3M imperial and then topped it off with some autoglym polish , in certain lights the car looks great , bright white again and the paint almost has a slight wet look to it , but under certain lights (bright sunlight,steet lights,shade) the paint looks very scratched from me compounding it
is there anything i can do to sort this out as its annoying me now
Thanks