Nice start in macro. You have also run head-on into one of the "problems" that all macro photographers encounter - depth of field - you either need to use a smaller aperture, or try focus stacking. As well, being an angle to the subject often creates this problem. I would suggest that when you are photographing "flat" insects like this butterfly you may want to try and organize your shot so that the wings are parallel to the plane of the sensor in your camera - not always possible - but it does help with DOF problems. As well, try not to crop off the antennae - such crops can detract from the composition of the image. My 0.02¢ FWIW.