In the middle of the frame there is an old Palace of Vladimir Alexandrovich in which the celebration is taking part. The view of the building depicts typical Saint Petersburg central view near the Neva river.
I used Canson Montval watercolour paper size A4 and synthetic brush №2.
The style is about one chosen blue color so it was pretty easy to paint through the work. After pieces were finished I’ve scanned them and made a bit brightness/contrast tweaking in Photoshop.
Here are some photos of drawing process and preview of the result. The invitations are in printing house so probably will be able to grab couple of them soon.