Hi Charles, there are two steps that you can take.
First, add the category for the medal.
In edit mode on the profile, at the very top above the biography line, add the category.
And then add the medal sticker just below the biography line being sure to use the image supplied at the category page.
It will then look like this:
== Biography ==
|image = Military_Badges_Medals-18.png
|Medal = Crimea Medal}}
Charles was born in 1835. Charles McPherson ... He passed away in 1920.
== Sources ==
I hope this helps. Please let us know if you have any questions.