get it stitched, it will be better and will be according to your preferred cloth.
may i know why do you need dashboard cover? dash covers produce massive glare on the windscreen when driving in sun.
you can see taxis have dash mats on them and when you sit in the front seat there is so much reflection of the mat on windscreen that you cant see outside.
My dashboard has started to fade a bit and i have a dashboard as well in car in Kuwait, i thought first to buy one from there but due to the country being a left hand drive they covers found there are not suitable for right hand drive cars, and for the glare on the windscreen if the fabric is really good (like the one on my other car which is made of suede) it reduced to 5-10%. Bear in mind even without the cover the dashboard still gives of a glare, but a great cover you can both protect the dash board and reduce the glare.