I saw in a magazine how to slimplify making a slipcover by cutting fabric directly on the sofa. For the life of me I can't remember where I saw this, but it's been in the last couple of years. I have had three (bought cheap) slipcovers from Surefit and I'm sick of the constant tucking and would like a neater, more custom look.

Also, I've heard of making a slipcover out of a canvas dropcloth.

Can anyone help me?

 

I don't make slips but would like to try someday and do own a few books on making one. What you describe is called pin-fitting and a good book for this is called "Slipcovers and Bedspreads" by Sunset. It's very old, from the 70's, but you won't find better instructions. You can find it used by going to Bestbookbuys
Another good book is Singer's "The New Step-by-Step Decorating Projects" pub. by Creative Publishing
Basically, you drape the fabric over the furniture, right side out, and pin fit it to shape, then cut your 1/2" seam allowance and notch it every here and there, then take it to the machine sew it together, matching the notches and keeping the 1/2" SA. Like everything else, it takes practice and I'd pin fit with cheap muslin first, then use that as a pattern. If you mess up your good fabric, you'll have to buy more.
I would not use the drop cloth canvas, unless you just want to use it as a loose throw. It's somewhat thin, very wrinkled and has seams thru out. A cotton duck, twill or denim would be better, and bought at a fabric store.

 

Thanks, Shadeladie. Your answer is very helpful.

 

Glad I could help. Good luck with it!