Intensely Chocolatey Hedgehog Cake

I made this for my friend's (Victoria) 16th birthday. This cake is one htat I am very proud of, as I created the recipe myself by mixing and matching and constructed it without any prior knowledge of how to do so. Everyone declaired this cake 'amazing' both in taste and looks. Here's what I did:

I used the same chocolate cake recipe that I did formy Very Chocolatey Celebration Cake although only for the basic recipe : http://www.bbcgoodfood.com/recipes/1190635/bestever-chocolate-layer-cake.
However, instead of cooking in sandwich tins, I used a pudding bowl and this took longer to cook. Just keep testing with a skewer.

Then I made a chocolate buttercream, using ratio 1 : 2 butter : icing sugar plus 100g milk chocolate and cocoa powder.

I placed the cake with the wider flat side down and cut  so that it was more of an oval shape and used the excess to round the top and creat a triangular snout for the hedgehog's face (using buttercream as glue).

Next, I covered the entire cake with the buttercream and used milk chocolate buttons to create the effect of spikes for the hedgehog, see details of patterns etc from pictures below (leave the face clear). I made the eyes and nose out of roll out  icing. Finally, on the face, I roughed up the buttercream a bit so that it looks more realistic. Et voila, the chocolate hedgehog complete. Final result below: