You're off to a very good start in astrosketching with this sketch (and the drawing of IC2602 which you posted). You'll get better and better with practice and as GlenM pointed out, you will also sharpen your observing skills. I like these posts of objects that we northern hemisphere observers never see.
There are advantages and disadvantages to using black paper and white paper. For instance, if you are trying to preserve your night vision, the black paper presents no problems with glare when you shine your light on it. Even using a red light, the white paper can have considerable glare.
On the other hand, I find I have more control using graphite pencils than I have with color pencils. Graphite is also easier to blend if you are rendering nebulosity or comets. I have recently begun using white watercolor pencils (used dry) when I sketch solar proms--they seem to work better for finer detail than regular white pencils. I haven't tried to make stars with the watercolor pencils yet.
If you are trying to show color, you can just choose the appropriate color pencil. With graphite, you have to do this digitally. I don't have a problem with the use of computers--presenting stuff on the Web lends itself to computer enhancement. That said, I use little processing myself, but respect all approaches.
Experiment with the different paper and pencils and see what works for you. There is a wealth of information in the Sketching forum here on CN that you can access too.
Here are a couple of suggestions that I can make right now. You noted the date and object name on your sketch. I like to also include the time in UT, the instrument and magnification, the FOV, and the cardinal directions. Sometimes brief notes and labels can enhance a drawing. Lastly, the black paper you are using appears to have a fairly coarse texture. You might want to try smoother paper for this type of sketch.
Here are three examples using different media, techniques, and suggestions:
Black paper and color pencils
White paper and graphite pencils inverted
white paper and graphite pencil inverted
The important thing is to just do it--and you are already over that hump.