Congrats on the first successful commute! Once you've done it a few times, you'll get to know the road better and where the danger spots are. It will get easier, but some days it will feel like ****. I always make sure to nod at riders in sweats on wally bikes; it's only right to acknowledge people who are new to the sport and just want to be accepted as cyclists. I do recommend wearing super bright neon yellow jersey. Drivers who are 1/4 mile away will see you long before they are running you over.