bringing home kitteh number two

bringing home kitteh number two

I'm currently pondering getting a new kitten to add to my family—which thus far consists of me & my eight-month-old female cat, Emerson. My main concern is that I've never had multiple cats before, and thus don't want to end up traumatizing Emerson, the new cat or both. Obviously they'll need an adjustment period to get to know each other & such, but aside from that... what are your best tips for adding a kitten (I plan to get another female, three months old at the very youngest) to the household? What worked for you, and more importantly, what didn't?
Aliens!

Aliens!

Actual Plant Related Photos!

Actual Plant Related Photos!

my room.

my room.

My Philly Apartment

My Philly Apartment

Fuzzy little plant

Fuzzy little plant

Water plant ID

Water plant ID