Urban Sketching HACKS | How you can create better urban sketches | Promarker and Uniball tutorialUrban Sketching HACKS | How you can create better urban sketches | Promarker and Uniball tutorial30 octubre 2021 https://www.youtube.com/watch?v=BN28vjg2LVs Urban Sketching HACKS | How you can create better urban sketches | Promarker and Uniball tutorial