I like the general concept here.. I think the house is too busy. Id rather you shade a house in the background and also if the arrows could be more dymanic perhaps at angle?
#46 love the concept. instead of a key hole can you make that into a house shape maybe? Can you look at the genre of the other lock on here.. I like that genre if that makes sense. Its a little softer and more realistic?! do you know what I mean? Good work!