poster development

I did some more sketches building from the work I have seen from other practitioners.
I think the Oskantino tower has worked really well against the red. It is a mixture of collage and hand drawn elements. But I feel the limited colours makes it much more bold. 
Also the lines do not distract away from the tower, but rather extend it and make it appear more elevated, and towering above everything else. 

I scanned it in and edited it to increase the contrast, make it more graphic. 
But I think it will work better if I do the drawing and collage separate from the background - maybe add that digitally?