Not trying to preach to you how to do this, But if I can relay this from my hubby the prep is most important with this kit. You will have a sheet of what is a type of polythene that is totally non stick which when put over the repair goo aids the smoothing out, if I can give one special tip hubby does is to find a way of putting some "extra weight/clamp, not a lot needed" on the patch to help with ensuring no air voids. And clean off as much excess to the outer show face asap before it fully sets as it can be a pig to sand down, as hubby found out the hard way which is testament to how good this stuff is.
You already know my nosecone is 2 different and plastics bonded with this kit, he has used it on varied bits for instance a R33 nosecone to repair all the mounting tabs, spoiler for same and 3 years later still going strong. Brilliant on motorbike fairings, upto now he hasnt found anything in plastic or glass fibre it wont bond to.
Ps No we are not in anyway attached to this company, just in case anyone is thinking so Hope this helps