Hello, I am from Brazil, excellent work, this is fantastic! I like so much of the Harry Potter saga, can you draw the Hogwarts Castle? Congratulations!
you certainly have adimirable patience and you dont let yourself get scared by large projects! but from the looks of this i think you should now study textures and surfaces, which i think u would find very satisfying and rewarding... also dynamics of depth and perspective. this drawing in particular looks very one-dimensional. it doesnt "draw you in", if u know what i mean. but im sure if u put your mind to it, there is nothing about drawing u can not learn, cause your abillity for work is astounding! liked and subbed. :)
veni u should place camera in a straight because far way from the sheet when u place camera too close o the sheet it gets a little bit difficult to understannd for the veiwer what u r drawing