This is a cool picture, and manipulation. Its fun to look at, and pretty. The only ways it could be better, are perhaps if the heart were a little bigger, so that it didn't look like the rose was bleeding over the edge of the top part there, and if the rose were in the center of the heart by itself, without the bud right there beside it.
Other than that, it's a great idea, and well executed. Keep up the good work.
(If you'd like to, and have the time, stop by my gallery. I only have four or five pictures, and I wouldn't mind some feedback, if you aren't too busy. If you can't, don't worry about it.) Have a great day!