Here's a chair you can make on your own:
And that's what it was:
So, let's start!
Take your old chair. Remove the seat and backrest.
Sandpaper wih the softest piece.
Wipe with a damp cloth.
Take any acrylic varnish for wood, add white paint, and apply 2-3 layers with breaks for drying for 1 hour.
Meanwhile make the upholstery: replace the stuffing with something fresher (polyester, batting).
Take measurements of the seat and backrest and to cut new ones out from any suitable material, for example, I took crocheted pattern.
Further, nail the fabric — first to the corners, slightly pulling, then every 1-2 cm.
Backrest is stitched inside along the sides.
The last side is sewn with a concealed stitch.
Fasten the details to the chair as they were. Done!