Undercoat is finished on all the models however I'm experimenting with how to do the horde bases.
Right now what i've done is stuck undercoated figures down and surrounded them with the sand. Once all are surrounded, I pulled them out. Once the sand on the card dries, i'll give it an undercoat. I'll also work on having the junk bots painted. Once he card stock is dry and the junk bots are painted, I'll fasten them back into their holes with super glue. Finally, i'll touch up the bases and paint the terrain.
I think I also have a stand concept ready for the sentinels. The original tentacles for the walker would make a perfect sturdy stand. Combine that with a CD, some sand, and maybe some skulls from Michael's halloween variety and I think it will do quite nicely.