The block on the front panel
On this page9
What goes in it
The signal word, the statement of the principal hazard or hazards, and the instruction to read the other cautions. Those three are blocked together within a square or rectangular area on the principal display panel.
Separated on all sides
The cautionary statements are separated on all sides from other printed or graphic matter, by a border or by space. A warning set flush against the product name is not compliant even if every word is correct.
Parallel to the base
The lines run generally parallel to whatever base the package rests on in retail display. A warning rotated to run up the side of a bottle for design reasons fails this, and bottles are exactly where that temptation arises.
The rest can go elsewhere, with a pointer
Cautionary material that does not fit on the principal display panel is grouped together on another panel, and the principal panel carries a reference telling the reader where to look, naming the panel.
Which is why it is a container decision
A rectangle of reserved space at a regulated type size, surrounded by clear space, on the front of the package, is a measurable area. Some bottles on this shelf cannot carry it alongside a product name and a brand. That is knowable with a ruler before anything is ordered.
Design the block first
Lay out the cautionary block at the correct size for the panel you intend to use, then design the rest of the label in what remains. Every other order ends with the warning being shrunk, moved or crowded, and all three of those are the violation.
Small containers are the hard case
The shelf starts at 5 mL. A 5 mL container has very little principal display panel, and the type size minimum does not scale away to nothing; it bottoms out at 3/64 inch for the signal word.
This is separate from the art material labeling
LHAMA decides what the chronic hazard labeling says. This decides how any cautionary labeling is laid out. A product can owe both, and they are satisfied by different work.