Are you doing me a concern ?

leer and stare

You can muck around with a few image parameters by changing the sliders to achieve that old-timey sepia or cyanotype feel. Moving those sliders to the right increases the effect

Tint allows you to vary the colour of the image

Intensity allows you to change how much of that colour shows through the image

Blur allows you to change the sharpness of the image

Contrast, unsuprisingly, allows you to change the contrast in the image