Nice job sithlord - although I think Skirata looks a little tired...
What headsulpt it that?
By the way, The only Mando parts that should be cast are the gauntlets, helmet, and jetpack, and maybe the knees. The chest armor could easily be made from plastic-card cut outs with a little heat-forming. There's templates for all the armor pieces on the dented helmet forums (put that into google and you should be able to find it) that are pretty good IMO.
It would just seem silly to use up expensive silicone and resin for a couple of almost flat, detail-less pieces. There are usually 2 engraved lines in the left pectoral plate, and a square engraved in the center chest piece, but everything else could be a bent flat piece of plastic.