Your alright. Your aim's pretty good and that's a big benefit. You also seemed to utilize cover decently, although there were 1 or 2 times where ducking could've saved you. However, there are some things you should work on:
*You never built anything in that video or dug anywhere. Taking out structures can be a huge deal if they're more complex than simple walls, and building bridges,bunkers,etc. will help you and your team in various ways.
*In the beginning of the vid, you tried taking long shots without scoping in. Not sure what's up there.
*You never went after the objective. If you can get away with it, always go for the intel or CP! Tunnel, flank, run & gun, no matter how if you have a chance, always go for it.
If you work on those you'll be pretty well of for a new guy. Also, this thread might help out :
viewtopic.php?f=63&t=1067