Yes, definitely -- the top jar needs to be larger, or in some way indicating that the pouring could go on forever - maybe no "top jar" at all, just a stream of liquid from a source that is off camera. As it is, you have to imagine the hand constantly moving to fill the top jar with more water, and then pouring it into the main jar.
So the graphic would have greater effect if it were an animated gif, with the liquid pouring in real time, and the excess above the rim spilling over the sides. But I don't know how to get together such an animated gif - that's a project for the future. But such a graphic would be desirable to have, because the action would continue forever as long as you look at the graphic.
Here's the part of Lucretius Book 6 that sanctions this specific allusion, connecting filling a jar with the issue of limits:
[09] For when he saw that mortals had by now attained well-nigh all things which their needs crave for subsistence, and that, as far as they could, their life was established in safety, that men abounded in power through wealth and honours and renown, and were haughty in the good name of their children, and yet not one of them for all that had at home a heart less anguished, but with torture of mind lived a fretful life without any respite, and was constrained to rage with savage complaining, he then did understand that it was the vessel itself which wrought the disease, and that by its disease all things were corrupted within, whatsoever came into it gathered from without, yea even blessings; in part because he saw that it was leaking and full of holes, so that by no means could it ever be filled; in part because he perceived that it tainted as with a foul savor all things within it, which it had taken in.
And so with his discourse of truthful words he purged the heart and set a limit to its desire and fear, and set forth what is the highest good, towards which we all strive, and pointed out the path, whereby along a narrow track we may strain on towards it in a straight course; he showed what there is of ill in the affairs of mortals everywhere, coming to being and flying abroad in diverse forms, be it by the chance or the force of nature, because nature had so brought it to pass; he showed from what gates it is meet to sally out against each ill, and he proved that ’tis in vain for the most part that the race of men set tossing in their hearts the gloomy billows of care. For even as children tremble and fear everything in blinding darkness, so we sometimes dread in the light things that are no whit more to be feared than what children shudder at in the dark and imagine will come to pass. This terror then, this darkness of the mind, must needs be scattered not by the rays and the gleaming shafts of day, but by the outer view and the inner law of nature. Wherefore I will hasten the more to weave the thread of my task in my discourse.