Great little piece! Really impressed at how well the expression comes across even despite the Sibelius soundfount quality. Kinda wish it was longer, but I guess you managed to express all you wanted to within those 30 seconds (which is pretty impressive in itself). It does have a very Halloween vibe to it – I particularly like the way the piccolo and bassoon complement each other, it really adds to that 'haunted woods' feeling.
Just a note on the scoring – I think that when you have a line of single notes on a paired woodwind staff, you're always supposed to indicate who's playing (a2 if both, otherwise 1. or 2. respectively). I saw you did that for the bassoons at the beginning but not anywhere else, which leaves it ambiguous for the players. Also, I believe it's usual to specify the number of players (e.g. '2 bassoons' instead of just 'bassoons'). That's all – great work, thanks for sharing!