tonal values and composition

I've been watching lots of watercolor painting tutorials lately.  Many of them were stressing these two points:
1. Tonal values (get this right and no matter what colour you use, everything ends up well).
2. Composition (what goes where and how much of it is visible in terms of shapes).  Some artists adds something from their memory, some removes the clutter and give more breathing space/environment to their work.
Here's two of such studies.  I was not giving importance to the details in it.

lonely

This picture was posted by one of my friend in instagram. It was really appealing since the light and shadows were making patterns and reflections which we couldn't resist to mark in to the sketchbook.  I don't believe I've done justice to this one. But with my limited watercolor skills I've captured it and here's the result.

watercolor portrait

The intention was to get the values right.  I happened to watch the portrait painting tutorial by Stan Miller in youtube.  It said to stress on getting the values right and not the colours.  This was an experiment keeping that in mind.  I believe I've to improve on the brush strokes.

deepika padukone

Used grid technique to get the outlines correct and plunged into watercolors!!!  Hope this turned out well.

masking tape structure

I've been experimenting lately with different mediums, explored quite a bit to boast and post about it here.  Here's one of the result.  This was made with left over masking tape while making a horse with paper-mache.  It didn't took much time and was a deviation from the intricacies of the main structure.  This deviation was necessary since the image of the main structure(horse) was flashing in conscious and subconscious mind.