Your beard is nice and full. It will probably keep filling in, but may not end up as dense as the front. This is a typical pattern, so nothing to worry about. You'll find the look that works best for you. It's amazing what you can do with just a brush or comb.

I think you're using a flash for your photos. If you can take pictures outdoors in the shade during the day time (indirect light), you'll see your beard how people typically see it. Welcome to the board.