Hi..Very Nice game..I like this..Your efforts are very much appreciated..

Some improvements..
1) May be you can place some wooden board instead of picture and cut the board as you move cursor. Amout of good cutting will increase score (or money in this case). You can set targets for collecting money per level.
Just note that here small cutting will not earn you much money. That means small cutting of corner piece will not earn anything...You can increase difficulty level as you progress the game.

2) Any powerups in existing game possible? May be giving some bonus so that all the worms are disabled for few seconds..or they will die if they touch cursor line...