Hey guys. So I know I need more variety, and I'm working on setting up more shoots for that. In the meantime, please tear my existing photos apart.

Specifically, I'd like to know improvements I can make to the composition, posing, lighting, and color temperature of each photo. There's only 4. Thanks!

I would suggest visualizing the shots you want before clicking that shutter. Perhaps go through magazines or portfolios of other photographers and try emulating the photos that appeal to you. Your second photo has a blue truck in the right side of the background, a drab fence on the other and the model right in the center. What is the point of interest here? There are certainly ways to combine these elements into an interesting photo. If you had access to the truck maybe have her sit on the driver seat with the door open, one leg stretched out and touching the ground, the other leg bent as she leans towards the camera and tips her hat.

Try differentiating your own position when you shoot. With the exception of the last photo it seems you were standing and/or holding your camera at the model's eye level or below her. Try crouching or sitting on the ground and composing from there. You're using a Canon EOS Rebel T3i and a 50mm lens, I believe. Your image sensor and glass can indeed record some pleasing images so the onus is on you.

Diagonal lines and triangles are generally more pleasing than straight horizontal or vertical lines. C curves are especially pleasing and S curves even moreso. In one image the model is laying back against a guitar but the composition doesn't do much. Perhaps the curve of her hip could complement the curve of the guitar - use your imagination.

Read up on the rule of thirds.

IMO  this image would have worked much better if shot / cropped in Portrait mode and by keeping the Models Hands in frame.


same here



Portrait mode and try not to allow the nose to break out from the facial features, turn the Models head slightly to the left, as in the first image above  ^.

fwiw

[Funny response] Not sure if you know this but you can rotate your camera to a vertical mode.
All 4 of your current photos are in landscape mode. For a modeling portfolio the more real estate devoted to model, that is more photo of model with less pickup truck and stairs; the more you will showcase your subject.


To get an idea of what cropping can do for a photo make a print, using either sheets of paper or cutting out two cardboard pieces shaped like an “L”, you can cover up the photo to see what effect and improvement a tighter crop could have.
As humans we are drawn to bright areas, thus all that white area on left side of photo is distracting. You have also placed the model in the center of the image, simply crop left side of photo off just out side of her pants pocket. As to a fix for the white area you could Photoshop in a scene from a different photo.
As to models pose, her head is in the no shoot zone, in a true profile we should not see any of her far eye. 


This would be stronger in a vertical crop, which included her hands, the truck is distracting.
As to her head position, if you notice her nose has not broken the outline of her cheek [That’s a good thing] so this is about as far as you can rotate her head away from the camera. Over all the background is distracting.


Of your current photos this is the strongest, like her eye position, nice catch light in her eyes. Do you see how you have filled the frame with your subject? Job well done!


Nice job of framing your model with the wooden post and railing.
Down side is in the area behind her head, there are lines running through her head, a bit like trees and lamppost running behind a subjects head. Foe me, had it been blue sky with white fluffy clouds it would be a whole lot better.

Happy New Year, I wish you well

Thanks so much everyone, this is very helpful!