I'm working on a sampler of ruler work designs for a class I'm developing. Matchstick quilting isn't something I've used much, but I have seen the design used to great effect on others' quilts.
This is not something you want to do from one side to the other in one fell swoop. If you did, things would creep and slide. Subdivide and conquer. (Somehow I got turned around in my moving from one side to the other.)
I'm not too fond of this feather, but the matchstick quilting looks great next to it. This type of quilting does build up quite a bit of thread in the 'ditch'. If this was on an actual quilt, I'd make sure to use a very fine thread.
In the above picture, you can see two different densities. Near the top right hand corner, I subdivided the 1/4 inch lines with two more lines. The rest of the piece I stitched 3 lines between the 1/4 inch lines and it was actually easier and more uniform to make those divisions.
This type of free motion ruler work is slower than doing a nice dense free form fill, but you develop a rhythm as you go. It isn't as difficult as you'd think to quilt these 1/16th inch lines. It does give a nice effect.
Have you ever given this design a try? You should, if you like using dense fills.