Layton Puzzle Doodle

For christmas my cousin and I both recieved 'Professor Layton and the Lost Future' and all we did for the next three days was help each other with the puzzles. Near the end of the game I became stuck on certain puzzle, the one where you must locate the bombs I think, and whilst waiting for my cousin to assist me I decided to draw a picture on the note pad. This was the result. Not brilliant but I quite like it.

--EDIT--
People keep telling me the answer! I just want to point out that this was a YEAR AGO and that I HAVE SOLVED IT! But I would also like to thank everyone for their consideration and kindness anyway!