The lesson
Post your usage curve with the next target attached, so the milestone reads as momentum.
The post says "@v0 users have now sent 100M messages" and adds "(and we project this to double in the next 3 mo)". The chart, "Total v0 Messages Sent", is a dark-mode area curve from Jul 24 to May 25 that bends upward toward the 120.0M gridline.
Only post a projection you are willing to be held to. Keep the bare chart with a single sentence and no logo or decoration.