If you're referring to a pair of heels, for instance, it might stretch them more than you would like. You can always do a second or third round to achieve your desired fit, so don't overfill the bag on the first try just in case!
The leaves should give you a clue, but you can also check the saucer under the container. If it's moist or there's standing water, you're probably overwatering. If it's bone...
You can temporarily change the color of a leather shoe with a few coatings of shoe polish. Opt for a liquid polish rather than cream, since liquid polishes give more...