It is still quite blurry. You could try to outline each of those bubbles in order to make them sharper, using just a bit darker tone than the color you used as shadows between bubbles. The pipe got some shape problems where lighter grey connects with bottom part of pipe, colored in dark grey, the right side of upper part of pipe (where highlights are) blends with blue outline.
Also your icons are in .tga format, they should be in .blp.