after you get one side down then repeat the procedure in the other direction. again remember to go slowly and chase the wrinkles off to the side.
i should also mention that even though the vinyl is referred to as 4-way stretch, you should avoid stretching the material as much as you can while you're gluing it down. the vinyl should be laid down smoothly whenever possible, with any stretching saved for tight areas or places with difficult elevation changes.
refer to the top 2 pictures below. if you notice at this point the entire front and top of the dash has been covered and all the wrinkles have been chased to the sides. once you get to this point you can flip the dash over and begin to glue down areas like the inside of the vent holes and the sides of the dash.
remember when i said that this wouldnt give you a concourse finish? well here is where you're going to run into an unavoidable problem. all the vinyl material that is left on the sides will unfortunately have some unavoidable wrinkles form. there is simply too much material and so some wrinkles will form. if you notice in the third picture i made a fold in the corner to try and help compensate for all the excess material at this location.
the good news is that when the dash is in your car you wont see these wrinkles because its mounted tightly against the firewall and a-pillar.
once everything is glued down go around with a razor and trim carefully.
there are definitely some small rough spots in mine (especially the surface finish where i didnt get the underside smooth enough) but overall i think it turned out really well.
if anyone has any questions or anything i can make more clear please feel free to message me. i hope you find this helpful!
p.s. i've included a picture of a custom dash emblem i designed in CAD and had 3D printed in Nickle. i think it will ad a cool custom touch