Thanks Bud and Des, both for kind words and the piece od advice.
Yet, I must confess I am very reluctant to apply any kind of heat to the model. The vision of distortions, deformations and, extremally, melting plastic are right away before my eyes... Still, I may try to test this method using some spare decals and spare plastic. I am really curious how this works, since my experience is that I achieve better results with wetted (with Micro Sol or just water) rather then quickly dried decals. My feeling is that quick drying will result in more pronounced membrane spanning over the hollow/concave fragments of surface details rather then forcing the decal to conform to it. But, I have already heard so many people saying opposite, that I start feeling an urge to try this method.
Anyway, I have finally overcome the problems and started varnishing, toing down and shading the lozenge along the ribs. The lower sides are already done with crosses on. The photos will come when I am done with the upper sides, too.