A very nice piece with great usage of linework and slight colors. My only problem with the drawing itself is how intense the shirt is in contrast to the person and the background. The shirt coulkd work with that intensity but you need to add some more black of that shade to the drawing itself to balance out the light and faded colors with the extreme and thick black ink work. This blck does not have to be added to the peron herself but instead could be added to the background to help make the painting fuller and cover a wider range of shading.
This piece is, in my opinion, one of your most stunning. The detail of the face, in particular the eyes, and that splash of colour really draw the viewer into its emotion quite easily. The colour that bleeds through the black of the body is also very effective in giving the quiet yet expressive feeling. Not only that but it also adds to the composition of the painting. The colours and the position, and expression, of the figure all lend itself to a soft atmosphere and a overall sensual and touching mood. You have truly and effectively captured the essence of a soft springtime. Well done!