DRUMMER CAFE

Your still a beginner so obviously there are going to be walls you run into. I am assuming you have a metronome, and if you don't go pick one up from a music store. First, after doing that find your comfortable speed that you can play 16th notes on the bass with.

Then, take that comfortable speed and go 5-10bpm over it constantly for a good ammount of time, until you can feel the burn and can't go on anymore. Find your comfortable speed every couple of days and do this exercise.

Try this out, let me know what happens

As a beginner, you may be experiencing some problems of coordination.  Those patterns are kind of challenging.  When I started playing patterns like these, the challenge was in the fact that for the first time you are wanting your R leg to move opposite of your R hand.  

Most beginner patterns play bass drum on the 8th note, along with an 8th note ride or hihat pattern, making them easier.

The trick is to break the exercises down to find out which part is the hardest for you.  AND to practice slowly at first.  Build up speed only when you can play consistantly at a slower tempo.

And yes it will improve, it just takes work!  There is a great book with exercises like this.  Rockin' Bass Drum.  It is not too expensive either, maybe 10 bucks or so.