I was just worried about terminology being different :)
The reason you get the creases is a combination of factors. Most dressage saddles are flocked (I say 'most' because I've never personally seen one that *isn't* flocked), designed to mold to the horse's shape, the stitching holds the flocking in place and you get the creases in the leather over time and use.
Freisians are particularly difficult to get a really good fitting saddle, 1) because of the shape of their withers and shoulders, and 2) because of their extravagent movement. A Freisian at rest is far different to one when it's moving and performing.
Depending on how far you intend to take your horse in dressage, you'll need to consider carefully finding the best possible saddle to purchase.
The few Freisians that I've seen and fitted for saddles have varied between the more 'athletic' type and the pure 'show' type. The athletic type is far slimmer, naturally, they have a slightly more prominent whither and are more streamlined through the torso. Whereas the 'show' type are heavier, have less whither and are definitely rounder through the torso.
With the athletic types I've successfully fitted the Wintec 500 New style dressage, the Wintec Pro Contour dressage and the following Prestiges: Top KK, Optimax and D1. By far and away, the D1 is the best type of saddle for the Freisian horse, because of the way it's designed.
If you go onto the Prestige Italy website, they have a fabulous video on the D1, that's definitely worth taking a look at.
Sorry if I've rambled a bit...it's early still and I've only had 1 cup of coffee:P
It is not 'cool' to ride without a helmet! period.