Any painting tips?
aliens - black undercoat , bronze and silver dry brush, black or purple wash(depending on preference) ardcoat dome for that nice glossy finish.
marines- i used a light flesh tone for the camo then sepia washed over the top, olive drab type colour for armour , used darker flesh tone for skin. (my marines were the first i painted and were not very good.
predator i been experimenting with the skin tones , doing a lot of layers to try get the reptile like skin tones.
WY commands were a nightmare to do in white, i undercoated black, drybrushed white, painted armour white, black washed, then painted the highlights back in ( took ages but looks good) i used various different greys for the straps etc and gun metal for the face shield.
power loader was the worst to do ( i found so anyway) undercoat black, painted yellow, black washed ten painted yellow highlights back in , painted metal for hydraulic pipes, dry brushed metal skuff marks, marine as per others. i would advise tho, if you can, paint power loader in parts as its very difficult to get into arms well once built.