The experimentation looks great, there's something about number 3 - the black silhouette and the grey outline - stands out to me :)
agreed - for me, Ernesta, the strongest of your designs so far are all those that have somekind of clear, strong limitation of style - something scratchy and 'old european'...
Watch the film 'Naked Lunch', there's a very wierd giant typewriter beetle in it.
No. 3!!!! The black silhouette with grey lines really works well