I baked one 10 inch round...

...and 2 x 8 inch rounds

Levelled them all off, saving the offcuts to make cake pops another day

I iced the 10 inch with chocolate ganache, stacked one of the 8 inches on top and iced with green coloured buttercream, then cut a 3rd off the last 8 inch round before stacking the largest piece next then the single 3rd on top, sandwiched with more buttercream as shown

This is the front view. I wanted it to look like jungle layers of grass and mud. I crumb coated to begin with then once that thin layer had set I went back and properly buttercreamed and ganached the front of the 2nd layer

I rolled thin snakes of light brown fondant icing to make jungle vines and used a small flower and leaf shaped cutters on pre-coloured fondant for the forest floor decor. I also used letter stamps to make the names and age. I did this around 3 days before to give everything time to harden and dry then stuck them easily onto the fresh buttercream