I've been working on a decorative block which is rather small, to such an extent that it can barely be seen in first-person when held in hand. If it comes down to it, I could alter the BlockBench model so that the block gets held up a little more prominently in first-person - but, I would really prefer to replace the item's appearance with a flat sprite, similar to how Flower Pots are depicted in vanilla.
I've done some fiddling around in my startup script an attempt to get this to work, but so far, I haven't had any success. Does anyone have a point of reference for how to replace a block's item appearance with a flat sprite?