I found both of these helpful to make and veneer my own dash. Gorilla Glue worked really well. Bought my veneer from Capital Crispin who will send samples (big enough to make a tiny practice dashboard.)

http://www.triumphtrs.co.uk/TR%20Drivers%20Images/Veneering%20a%20TR6%20Dashboard.pdf

http://www.buckeyetriumphs.org/wp-content/uploads/2015/11/How-to-re-veneer-your-dashboard..pdf