Just to give an update
I left the pillar to harden over night, then this morning I gave it another layer of hardener. It should be dry in 8-10 hours & then I can sand it back to flatten all the layers. Once this is done then I can I apply the laquer, flatten it a bit more & then give it a final polish before refitting it to the car.
This is how it looks at the moment
It looks a bit messy around the edges but the material is larger than the pillar so I will trim around it once its finished. There are 1 or 2 imperfections in my weave but for a first attempt I think its looking ok at this point