You say in your notes that you've had two photo shoots for your portfolio. Go through the images from those shoots again and pick a small selection of full length, 3/4 length and head shots. For the body shots pick images where whatever you're wearing fits well and flatters your figure. Discard any where your garments are loose/baggy. For the head shots make sure your skin is a healthy, bright, peachy colour and your eyes are lit up. Discard any where your skin is either orange or desaturated to the extent that it looks like you have the flu! Also discard any where your pupils are in either the left or right extremes of your eye sockets - ie make sure you have white visible both sides of the pupil.
One hopes that from two portfolio shoots you ought to have images matching that spec. It takes time for a new model to appreciate the kind of base images photographers like to see and I think you just need to re-visit the images you have with the above in mind.