Finger painting

I decided to return to studying the particular tones Richter creates throughout his paintings and adding my own influence within them. I decided to paint these three pieces with my finger because I felt that it created the smooth looking consistency that I wanted to achieve. I feel that I have created the similar way Richter blends his paint together throughout his pieces, he often has a two contrasting colours in which he gently mixes together to create a light to dark tonal value, in addition to that, it creates a "middle" colour that as both colours running throughout it. I feel that I have created this throughout these pieces. However, I dislike the bottom piece, I feel that it the colours do not work well together and the browny colour just looks silly within the middle of it.