I will be fitting this dashboard into my mini rally car with the next week or so

As u can see it needs a fair amount of cutting/trimming to make it fit, but what is the best way to ensure that I only cut off what I need to and don't bodge the whole dash. Do I make a template in cardboard of the areas that I know that will need cutting and cut them then make the same cuts to the dashboard?
Please some one help!
Oh and one more question, has anyone used the Frost diy flocking kit? Would u recommend it and has any got any pics of a dash that they have flocked with this kit.
Thanks
Kevin











