For the bases, I painted the top Death World Forest. After trying, I gave it another layer and then put 2 big drops of Elmer's school glue on top of it and mixed it together to get green glue. After spreading all around the top of the base around the model's feet, I put drops of Krazy Glue in it which causes it to try out and gives nasty organic looking circles. Wait 5 minutes and use a toothpick to put a little Krazy glue on the rest of the base to give it some texture, but being sure to move and pull it so it does not make more circles. After it all dries, I put Nuln Oil in the circles and covered the rest with Nurgle's Rot.
For the champions, I added rocks for them to stand on. Started with pieces of cork that looked good for the size of the base. Glued them on (after painting the top green already) and primed in Imperial Primer from the paint pot. 2 coats. Then painted the cork with Mournfang Brown followed by a light dry brush of Skrag Brown. Once that was dry I did a little bit of edge highlighting and drybrushing with Ushabti Bone. Glued the champions on after that and did the rest of the steps the same.
Album of in progress pictures
A few images from the Album