Thank you for your comments, they are really useful to realize about my mistakes, mainly in the technical aspect, which is what I want to improve.
I have some problems with materials and locations due to the place I live (developing country in not very safe conditions), so sometimes, like here, I did not use tripod because I can´t have it with me where I live now. Anyway, I am already thinking about assignment 6, and I will try to make it as good as I can.