Deni – Sorry, I meant to post another reply and forgot.
There is some useful stuff on welding splatter here:
http://weldinganswers.com/7-causes-o...liminate-them/
Keep practising, as I was definitely better at welding by the end of my build compared to the start.
The same can be said for my ability to work with fibreglass, as that also got better as I did more of it.
Have you checked the height/shape of the top of the bulkhead so it is a match for the inside curve of the bodyshell?
As it would be easier to extend the height now and trim it back to fit as required later on.
Good luck, Paul.