Why does this look bad

This picture is from a couple years ago, but this is a typical spring/summer outfit for me. I can't get the fit/proportions right. The running shoes look like boats. The shorts are just your typical medium inseam chinos, but they are bunched up looking. If you look at me from the side, I have hyperlordosis so my back has this weird curve that makes it look like I have a big butt or something