What color is the car?
You could get it lowered 50mm
Get new alloys, depending on the color of the car VTS alloys in black or white looks really nice
Get your rear windows and rear screen tinted
Get smoked headlights and rear lights
Get a vtr mk1 spoiler
106 gti half leather interior which fits straight in a saxo
Saxperience stickers on your rear windows

I have a black sun strip on my silver vtr mk2 with white letters saying Saxo VTR which looks really nice. I got it on ebay and you can have whatever you like written on it.
Get a nice steering wheel maybe? I got a citroen racing steering wheel on ebay which is smaller in diameter than the standard saxo steering wheel and feels much nicer to drive.
Theres a lot you can do to your car mate. If you can post a picture of it I will gladly try to give you some more ideas.