Update mixamo.adoc

src/docs/asciidoc/jme3/advanced/mixamo.adoc

@@ -321,6 +321,9 @@ You can drag the slider, at the bottom of the strip window, to the right or left
 
 Your file is now ready to <<jme3/advanced/mixamo#ogre-export#,export>>. 
 
+Your NLA strip should look something like image:jme3/advanced/MixamoNLA.png[MixamoNLA.png,width="",height=""].
+
+
 == Notes