I feel my veneers look fake but can’t pinpoint why. Also seeing gums retract, what can I do to reverse that? (Photos)

Thank you for your question along with the pictures. The veneers look too big for your face and smile. They also have a very square shape and little to no curves which makes porcelain look natural.
I would seek out an expert cosmetic dentist in your area to redo your case. It's a good idea to see a periodontist as well to address the receding gums. If there is a bigger reason for the recessions, its good to know about it upfront.

The veneers look thick.  This has to do with the contours of the veneers and the sizing/shape/embrasure spaces, but also the color could have a bit less opacity.Changing these issues could give a more delicate and natural look.

Hello and thank you for your question.  Keep in mind, it will take some time to get used to the look of your veneers. However, I recommend following up with your Dentist about your concerns or consult with a Prosthodontist, who can discuss with you the different types of veneers to give you the best long-term results. A Prosthodontist is a dental specialist who has advanced training in restoring teeth and can create a customized treatment using the latest techniques in dental veneers.

Hi:I would like to see full face photos to give you more accurate advice.  The main factor in your case could be the color of the veneers.Best,Dr. Maddahi

Making a porcelain material look natural in the mouth is a very difficult task in dentistry. Many factors such as color, shape, hue and value must be taken into account. This is done through careful planning and with an expert lab technician and dentist. If the color is too white or shape too large the teeth can look fake. Once they are bonded the only way to alleviate this would be to remake the veneers. Traditionally approval is obtained before this is done as removing them involves a lot of risk and wasted time. Sometimes the gums recede slightly after the procedure and should bonce back within a couple of days. If this does not happen there may be a more serious underlying problem such as bone loss where graft surgery could be needed to correct. 

Some labs make "monolithic" restorations, so they appear one color (which is not natural).  Other labs can layer porcelain for a more natural look, so it takes homework to find a dentist that works with a top lab (not all dentists are equal, not all labs are equal).  Be sure to find a dentist that can plan and design your smile BEFORE you start.