Hi Sam,
For the first piece of armour that you have done, your figure and aircraft skills have stood you in really good stead, as the Wespe is starting to turn out very nicely. Your cam pattern is excellent and once you have the weathering on and the final flat coat, I think that you should maybe look at placing it in a small diorama. I guess that you have to decide where it is operating and look at the weathering from there.
The trouble is that if you enjoy building these pieces of artillery, you will soon find yourself buying others like the Hummel, or the Marder series and not to forget the others that Trumpeter are offering.
Lets see some more of your progress soon.
John