My cake tips are:
I left the cake to cool overnight - even slightly warm and the icing becomes a sloppy mess.
Brush away the crumbs with a pastry brush. Then brush again. Then again.
Think ahead and make sure you have a cake board to put it on! My poor Domo is on my biggest plate - which is a curved side sushi plate - this made him a nightmare to ice. Completely avoidable if I had remembered to buy a board from the local cake shop!
Buy pre-made coloured icing if you can find it. Hand kneading bright red dye? Bad idea - unless red hands are your favoured look. Dont bother with gloves - they stick to to the fondant and pull off.
Poor Domo - being stabbed!