While pichwais usually depict Lord Krishna or elements related to him as a subject, in recent times artists have been experimenting with a few other subjects as well, including those from Jainism.
Pichwai paintings are usually created by a group of artists and hence, are typically not signed, since credit cannot be attributed to one individual. When a senior artist creates the entire Pichwai by himself, it sometimes carries a signature, much like in the world of contemporary art. Signed pichwais such as this are rare, and usually more valuable than unsigned pichwais.