If aesthetics scores over pricing for you, then go for made-to-measurement small chair slipcovers. These will give you the perfect, form fitting look that you seek. It’s as good as having a new upholstered cushion for your small chair.
Most retailers will send someone over to measure your chair. But some online retailers need you to measure the chair yourself and upload the measurements online. In this case, grab a measuring tape and go to work. Take detailed measurements across the back, the height and width and the depth.