Updated: May 19
An easy way to make your fills sound more interesting is to put a few kick drum notes in them. Below are 7 examples of fills utilising the kick drum. The first 3 can be treated as practice patterns to get your fills sounding smoother whilst the last 4 are more specific drum fill ideas.
Don't forget you can download a PDF of this exercise by clicking the file at the bottom of this post (the quality will be a lot better).
Try to make the fills “flow”. Make sure that your kicks and notes played with the hands are played evenly and at a a similar volume.
If there are two kicks in a row then make sure you play them both the same volume. It’s easy to accidentally play the second kick louder.
Hope that helps!