Matsya Purana 260.34

260.34

vinirgatāntrajālañca dānavaṃ parikalpayet.
vamantaṃ rudhiraṃ ghoraṃ bhrukuṭīvadanekṣaṇam .. 260.33

The altar or seat of Nṛisiṁha should be made formidable his face terrible, the eyes should be split the mane should be raised, and the scene of ripping the breast of the demon Hiraṇyakaśyapu with blood gushing from it, as well as the angry looks of the Lord should also be well depicted.—32-33