WEll, she's not invisible! She's really cute. Is she part draft?
She has a long back and is overweight. You can see it in the cresty neck and the butt pillows. I bet she's an easy keeper, no?
She has a nice, strong shoulder and powerful neck, if a bit thick at the throatlatch and the crestiness I mentioned.
Her knees look a tiny bit tied in behind. And her hind legs are base narrow. I am not sure the correct words, but her hocks appear to wing out a bit and her feet stand a bit narrower, closer together under her. Could be how she is squared up , or lack thereof.
First of all, your horse may be approaching a critical mass with her being an easy keeper. I have attached your photo of her and have circled the crest on her neck in blue. This horse looks a bit like she may be more than an easy keeper and with that crest is probably insulin resistant and might be headed for founder. I would get her off pasture and whittle her feed intake down while at the same time increasing her work load. A second blue line along her belly shows where her belly should be if she is in good condition.
Her shoulder is steep while her point of shoulder is well placed. The red line shows what her shoulder and point of shoulder to elbow angles are, and the yellow line shows what would be a better angle for her shoulder. Her neck ties to her chest a bit low and the ideal placement is shown by the blue line.
She stands over a LOT of ground but she is nearly level as shown by the line from root of neck to point of buttock. The blue over her coupling area shows the excess back length
She is quite light in bone for her size. She is tied in at the knee and also a bit tied in at the hock (something you do not see often). From the rear she not only stands base narrow she also is bow legged at the hock and shows why a straight hind leg has the toes behind point out a little. The hind leg is a spiral construction (like a spring) and that construction helps the horse to drive forward.
I had a horse like this that I sold. He lived to be 38 years old and was rideable well into his 30's. I like this horse quite a lot (conformation is never perfect). She looks to have character and be a real packer.. but she really needs to be conditioned with work 4-5 days a week and fed a lot less.
I would love to see her in about 6 months after you have slimmed her down and gotten her into work 4-5 days a week.