From what I've been able to piece together very casually, Hitler's artistic talents were nothing to speak about in terms of landscapes or portraiture--at least not without major, major coaching/schooling. I recall reading that he tried to secure a position as what we'd call a drafter or designer in today's terms with many Viennese architectural firms, to no avail. Perhaps had he tried elsewhere in a lesser city in either Germay or Austria he might have gotten such a position after all. Had that happened, he might have had a career of some modest note--and would likely be no more than a minor footnote to 20th century architectural history at best.