Easiest way to do the fronts is pull the base of the seat out of the metal frame - be careful, lots of sharp edges, I didn't get cut but Ozan did a few times
I didn't use adhesive last time but plan on just getting some spray contact stuff to pull it against the seat a bit more. You'll need a stanley knife to cut small holes where the headrests emerge and the seat adjustment controls are on the driver's side.
Make sure you pull everything tight! The strings/elastics need to be very tight (but be careful not to stress any individual cord as the string may snap and the material could possibly pull away from the stitching on the elastic).
When sewing through the seat you'll find it's probably easiest to sit on the ground with the seat on your lap. You'll find the stitching lines up fairly closely to the lines of the original seat, and when you pull the strings through you can test if it's aligned properly.
I'll be doing my next set in May (ordering tomorrow) and will experiment with adhesives etc. Also going to Lee Bros to get the door trimming done (unless anyone knows somewhere better in Brisbane...?)
Finally, whatever you do, don't f**king sit on the front seats out of the car once you have the cover on - very easy to bend the seat base mounts... nothing a hammer doesn't fix, but it's still not a wise thing to do in the first place...