Since you have the experience, what is your professional opinion of how well the Ukrainian artillery is working? Ukraine is trying to make everything they do look good for the cameras as information warfare. It still looks like their artillery really is performing somewhere between extremely and insanely well.
The best proof that the Ukrainians are using their artillery well is that the Russians have had to scale back their objectives even then, they're getting clobbered at the river crossings. That kind of performance is never luck: it takes good planning: getting the right numbers of firing units within range and getting their food, fuel, and ammo right there with them - and having your weather and registration data up to date - and good, precise spotting for the targets.
On the other side, the Russians have the numbers and have flailed away at cities (!) well enough but seem to be unable to master the planning outlined above for fast, accurate, and devastating fires.