Missed a step-sanding-in prep work
After finding this forum, I've found the walls should have been sanded prior to fixing cracks and (many) dings. They were previously painted with semi-gloss laytex.
Can I sand now or is it too late? And here I was giving myself a pat on the back for repairing these dang holes so nicely. That'll teach me to gloat!
Thanks all for any advice!