Here we go then, in reverse order starting with season 4, episode 10...
"Survive the realm all over again with “Beautiful Death,” Robert Ball’s artistic interpretation of the most iconic deaths from the first three seasons of Game of Thrones. Whether by direwolf, dark magic, dragon or blade, feast your eyes on the preview below. Experience the complete episode-by-episode illustrated series and submit your own creations at BeautifulDeath.com."You can find the previous released posters from the first three seasons in the 6 collections here, here, here, here, here and here.
Hopefully the collection will resume next year for Season 5.