I have asked myself what is that I like about this image so much, but I still don't know why I like it so much. Probably connecting me to something I enjoyed doing.
7 - Met the Challenge (probably just - there are 2 'tools' here and a box of material in my opinion and as for the 'trade' aspect the jury is still out). I like the composition of this photo and the capture of the bold colors. Criticism; perhaps a slight 'tweaking' of those said colors, ie; the red looks a little orangeish (but that could be my monitor). If the smaller paintbrush tip were shown better and there was more of a 'focal point' somewhere in this picture, it would make this a better photograph in my opinion. Perhaps somehow showing the 'wet areas' too on the actual paints would make for an extra 'edge'.