Much as I did love that badly titled movie, Thanos seemed a bit weak compared to the original.
In the movie Thanos is doing what he thinks is best to deal with overpopulation of the universe, making less food and stuff available to all those who live.
In the original comics this story comes from, Thanos if the lover of Death... and Death is bothered that there are more people alive now than have ever been dead in the entirety of time. So as a gift to his lover, he hunts down the Soul Gems, what they were called before he renamed them, and created the Infinity Gauntlet to kill off half of everything that lives as a gift to her.
Detail on the model is great, but the facial expression is kinda lax. Thanos is fierce, powerful, and cruel.
It should look meaner.