Thank you for this puzzle. It was fun, and it has a different feel than those published by Nikoli.
On very important note: It is difficult to mark the borders when the grid is solid black. I ended up editing the image to change the color of the grid. Please consider, in the future, to either use dotted lines, or use a lighter color for the grid of fillominos.
I suppose that would be useful for solving on paper… usually in my MSPaint testsolves I use the thick brush. I’ll try to have that changed very soon. Thanks for the comment.
EDIT: All posted puzzles are now fixed.