It was technically well done, the lighting and effects were all fantastic, but I was disappointed by how it strayed from the books. Many scenes were missing, others were changed (not for the better), and some were just completely made up.
In order to make the 2.5 hours, and the PG rating, it seemed horribly rushed and just skimmed over some parts that really should have been looked over deeper. One thing I have to say was done really well though was Draco's mission - I really enjoyed how well they brought a more human aspect to his character through the entire movie with his little forays into the Room of Requirement, his interactions with Snape, and at the top of the tower.
This movie was thought provoking and beautifully done. I found it interesting to watch and loved the effects. I'd definitely recommend to my friends seeing it, and would go see it again myself. I don't think it is for everyone, definitely not for those seeking just an action movie or just a superhero movie.