Nicely done. I'm going to set this at my side when we play tonight :)
Each encounter is essentially 1 page (a couple roll into a second page) and there are direct references and connections to the Curse of Strahd book. I can easily see how each one of these fits into the published campaign. So, if you are running this, perfect! If not, then it's a simple matter of changing the names of some NPCs and/or places.
The one, new, magic item, is very nice. It's entirely pertinent to the encounter and is a very nice item to have, but not in the slightest bit 'overpowered'. It is a one use healing item, but what is awesome is it's one time removal of negative effects -- which I know a few of my players would already love to have in Ravenloft!
The layout is well done. It has enough art to inspire you and make you want to flip through the pages, but nothing special. Which is cool, I don't need someone to spend extra money on an art budget for a simple reference. AND; thanks for a printer friendly version. I pull these PDFs up on my tablet, but anyone who wants to print, will be very appreciative.
BTW, if you are confused by the subtitle of "10 Random encounters in the Shadowfell". This is because Barovia is in the Demiplane of Dread and in 4e, the Demiplane of Dread was 'moved' to the Shadowfell. A little odd they chose that reference, but that's the connection.