Squat looks pretty decent. Nothing jumped out at me as a problem. I did notice that you brought your grip in just as you finished. If you can use a closer grip, that often makes it easier to stay tight - but it can also upset your elbows (I know this all too well). I would recommend playing around with maybe bringing your hands in a palm's width or so and working from there to see how it feels.
Deadlift is hard to tell from that angle. It is a good effort, certainly. From what little I could see it did look like your hips shot up, but a 45 degree angle or profile view is much better for spotting any flaws. I would recommend bringing your stance in a bit. The two ways I've heard of finding your optimal conventional stance are:
In regards to getting into a meet, find a local meet; join the federation running it; pay your meet dues; get a soft suit and some long socks; and turn up on meet day. That's all you need to do. Try to rest for the three or four days before it but other than that for a first meet you shouldn't need to change your training at all.