First of all: Thanks for "quoting" me HeavyArty!
Second: Thanks for the compliments to both of you!
To be honest the helo still looks almost like that; I just added various doors and hatches and the missile and rocket launchers, i.e. rotor still missing, due to space restrictions: I can't display it in my case with the rotor on!!!!
When I did it neither Cobra's nor Eduard's nor Aber's aftermarket kits were available so I built this kit OOB and none the less I'm satisfied of how it turned out.
Adding one or more of these kits would only improve the quality of the model adding more detail.
For masking I always use small masking tape strips, for the contour and Humbrol's Maskol to fill the remaining area. Still sometimes I have to touch up with a tiny brush.