Do you have some kind of a pattern for them?
No pattern at all, like I said, I let the lumber tell me what size it will be. I pick out the bottom (hopefully it won't need any cutting) put the legs on the bottom, then the back and arms are cut to fit that. I use the arms, back ect as the pattern to cut out the fabric then I staple the padding to the bottom, back and arms. I sew the fabric as much as I can leaving only what is needed opened so that I can screw it all together under the fabric.. and staple the fabric to the lumber to finish it.... make the little skirt and staple that on.

(I am not good with a saw and bought myself a little battery operated 3 1/2 inch (blade) saw that I could handle SAFELY. I also have a battery operated screw driver)