Just going wild with GMIC's sketch filter

Software G'MIC
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DMG06950-DeRijp-ISO800-DMG06952-DeRijp-ISO800-drawing3-2018-web by Mike Bing, on Flickr

DMG06881-DeRijp-ISO400-gimp2-2018-web by Mike Bing, on Flickr

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I think these buildings are a nice application for this filter, it helps bring forward the lines of the buildings and branches. Nice job!