I used the Olive drab that came with the kit (this is a gift set bought for a fiver on Ebay) but it was very old and looked pretty poor, so I got on with the spraying before trying to tidy it up.
The instructions say put the propeller on before joining the fuselage halves, but that means spraying is tricky, especially with spray cans - I used Humbrol Metalcote Polished Aluminium - so I decided to use an old yogurt pot as a means of protecting it from damage and paint. I was very worried it would stick to the plane and I'd end up breaking the thing off when it came time to remove it, but actually it worked, more or less...
I rubbed the Olive drab down and then did another thinned brush coat and while it's still very rough, it does look a bit better, so I decided to leave it at that.
The aerial was really badly deformed with flash on the frame so I ignored it and used the connecting arm of an old LED instead; I think it looks OK and it's rock solid
I've made about 7 or 8 planes now, all Airfix, and I do feel like I am learning and getting better, but there's still loads I need to learn. Rule one: be a LOT more patient. Rule two think BEFORE trying something new... Etc. I am not sure if I want to think about using an airbrush until I get better with spray cans, which I think I am, but I don't see the point of trying to run before I can walk. There's no rush, I'm not doing this for any reason other than fun, and I didn't know anything about planes before I started building models of them (and I still don't, really). Anyway, this is where I am at the moment...