I'd not bother sticking arches and stuff on, they usually look shite on 4dr Escorts IMO... at the most, I'd fit a 90-spec RS Turbo front bumper and color code the back bumper. But, if its got normal black non-coded bumpers then I'd just leave them as is and treat them to some back to black so they look mint.
Sure there is a thread in the photo bit which shows base spec MK4 escorts and they look miles better with very little done apart from making mint.... put a few pics up for us.
Cheers,
Grant