Put small funnel into paint bottle with residual paint in it.
Get your tablespoon (it's ok if it still has some pouring medium in it) Teaspoon and 1/2 teaspoon ready.
Add you second tablespoon of pouring medium to the paint.
Add your first tablespoon of pouring medium to the paint.
Measure your pouring medium over a plastic one cup container or other something similar.
Get your tablespoon and pouring medium. ( Shake pouring medium)