I`ve made one cake before , using a Marshmellow Fondant and it turn out pretty good.

I want to attemp making a similar cake as the one pictured below  for Mother-in-Law`s 85th Birthday Get Together . DH is on board that it would be a great cake to make since she has pick up the habit of hitting me (punches on the arm) since her husband passed away 3 years ago.   We often tell her that we will be buying her boxing gloves.

I`m pretty confidant I can make something similar but would appreciate any tips.

I have also found a tip on the web that involves spraying the cake with Pam Butter Flavour Spray to have it turn shiny...Anyone used that method before?

I think the shine would really make the cake so any ideas beside adding the sparkle sugar sold for such purpose.   On the Cake Boss , They lightly steam the finished cake , I don`t think I want to use my house steamer for such purpose

Thanks in advance for any tips.

if you "paint" on the fondant, you mix the food dye with alcool such as Vodka so that it evaporates and does not saturate the fondant...

Would egg white be safe  ? 

I know that the marshmellow fondant is not that expensive to make so I guest I could make some and play around with it to see what works.