1. Kardama Muni should look something like you have pictured Vyasadeva, with beard and top know of hair, not as you have pictured him in your drawing. Generally munis have beards.

2. a) The kinnaras and kimpurasas should look like demigods.

3. As far as wearing beards one class of men like Advaita Prabhu never wore clean shaven appearance but always had a beard. The other process is to be nicely clean shaven, by the barber. King PratapaRudra was a king so he should not wear a beard but mustaches.

4. Svarupa Damodara should look like a brahmacari. He should not have a beard.

5. In Panca-tattva everyone has an effulgence, but especially Lord Caitanya and Lord Nityananda

6. The Mayavadi sannyasis generally wear their dhotis up over their knees, and because Lord Caitanya took sannyasa from a Mayavadi sannyasi He is shown like that. So He is seen like this as a sannyasi.

7. Lord Nityananda never took sannyasa. He was independent, like a brahmacari, and later he became married.

8. You may depict both the sages and Yaksas on the ground in the battle with Dhruva.

9. Yes, show Dhruva's soldiers along with him.

10. Ghosts sometimes manifest a body and sometimes they do not. When they took a body it was golden.

11. Dhruva was a Vaisnava, portray him like that. There is not harm that he have a mustache, also helmet, ornaments, and pearl necklace.

12. Svayambhuva Manu is a king, portray him with mustaches.

13. The picture you have enclosed of Siva Linga is approved by me and it is in the right proportion. It may be black or white according to the stone.