'Munttoren' Amsterdam in 3D

Im awful at 3d modeling..i can actually only do a bit abstract. but since had a little project running on school which could give me some bonus point if i designed this tower in 3D i thought....let's give it a shot.. so here it is.. i'm not an experienced modeling designer.. just doing the basics here and i think it isn't that badd at all..

comment plz tell me if you got any suggestions on how to improve. All welcome!!

Thx for watching.