thank you once more for another one of your so very detailed, deeply considered, very positive and encouraging critiques.
I very much agree with you that light coming from the side will do the best job to show the shapes of textures, while backlight can bring in further pleasant effects such as showing transparencies. But it does need a lot of good luck to get both.
You also mention the problem of sufficient depth of field with insect macros. Well, working with compact equipment of much shorter focal lenght than a full size dSLR, I am much better off in terms of sufficient depth of field. On the other hand, with a long depth of field even with a diaphragm wide open, I have painfully learned to look very deliberately for a non-distracting neutral background for macros, or to take the background decidedly into the picture. One of the best neutral, non-distracting backgrounds available will often be the sky.
My best regards to you,
Parnassius apollo. (46)