Using Threshold on Photoshop

• Desaturate image first --> brightnesss/contrast - make sure details aren't lost 
• Double-click layer to make it a layer (unlock)
• Right-click --> duplicate (two layers and switch off top layer)
• Image -->  threshold (darken the image and add lighter layer on top
• Image/adjustments --> hue and saturation (bottom layer)
• go to top layer (multiply) *show both layers overlaid together
• REPEAT PROCESS ON TOP LAYER 

• Bitmap texture
• Image --> Grayscale --> bitmap
• Halftone (low frequency to keep detail e.g. 20. 
• from bitmap to grayscale --> rgb colour 

*can use textures for depth etc.

Removing white background to create overlay option 

• select --> colour range
• *click white area --> delete
• (repeat both process on both layers)