I have questions in different areas, if you have any experience and or tips please share.

For all of you who have made a pregnant belly cake:

What pan are you using for the belly? I thought it was the half sports ball, but when I looked at it in the store it was small ( in the gallery pictures the belly looks about 8 months size the half ball pan looks like a five month belly)? Is there a pattern for the maternity top?

Air brush experts:

Is there a good quality air brush system that's inexpensive; how would I use luster dust with an air brush? TIA

Sorry, I don't have a airbrush,

But for the preganet belly I know people use the Soccer ball pan often.
Good luck.

not into airbrushing, but if you want a bigger belly, you can always bake in a larger pyrex bowl using a flower nail.