Thanks for all your kind words, people.
I agree about the bagginess of his trousers. Originally the trousers were rather thin but I rather overdid it.
With the arm-length problem, I think that I will try using Victrix arms with the hands from the GW figures and see how that goes.
One thing I keep forgetting to mention is how good the Victrix plastic is to work with. I don't know how it is different but it is far easier to work with compared with GW and Warlord.