Retrofit Spoiler for K1/K1S

Wish there was something else to go off of besides a weird angle shot of spoiler. Don’t get me wrong, the picture is awesome but it doesn’t fit like that at all on the K1S. I tried my best to replicate it but with no other pictures or directions it’s very upsetting because I want to like it and make it fit but with the pieces of 3m that was pre cut it instantly came off due to poor prep. If you would give better guidance on how it fits out more angles would help,