Those look good, especially for your first attempt. Darker colors are easier to hide glue lines and such, but even the yellow on the outside looks pretty good.
When I'm sanding with a dark wood, I only sand starting at the bottom of the points to the end of the cue and I don't go over the cue again with the same spot on the sandpaper. That should help keep some more of the dust out. I also blow it off a lot and wipe it down with mineral spirits between grits.