In 1777, he established himself as a portrait painter in Berlin, and completed commissions with the help of his younger brother Heinrich Jacob.
[2] Johann Heinrich Wilhelm was able to visit Rome in 1779 and continue his studies, thanks to a stipend from the Kunsthochschule Kassel.
[3][4] In 1783, Tischbein received another stipendium, this time from Duke Ernest II (upon the recommendation of Johann Wolfgang von Goethe), allowing him to return to Rome from Zurich.
He held this position until 1799, when he was forced to leave following the French invasion and the establishment of the Parthenopean Republic.
While he was in Naples in the 1790s, he designed and printed etchings and engravings of motifs taken from antique vases as well as illustrations to Homer’s Iliad and Odyssey.