Covering a memory foam seat cushion/back support

[charlotte]

Wedding done... next project:

I have this memory foam seat cushion for my home office desk.



It is extremely comfortable on my Ikea folding chair and can be easily stashed away when my home office has to become a guest bedroom.

After two years, it looks like some degree of homeworking is here to stay, and I'd like to upgrade my office space a bit. I was thinking of making a new cover for my cushion, perhaps in some lux velvet upholstery fabric - I've been looking at the thread Missie started for ideas.

How would you tackle this project?

I can see curved lines, which presumably give the cover shape around the bend (like inverse princess seams). Can I just trace off the old cover, or do I need to cut it up to get the right curved lines?

Should I make a mock up of the cover first once I've got a pattern, or will I be okay snipping straight into my (potentially pricey) upholstery fabric?

[Iminei]

WWWWHHHAAAAAATTTT???

You only got married on Saturday ... Rest, have some time together not doing anything .. Love!

[charlotte]

WWWWHHHAAAAAATTTT???

You only got married on Saturday ... Rest, have some time together not doing anything .. Love!

Hahaha! It's okay, it's been a month since the wedding already. I'm not THAT crazy! 

[Bumblebuncher]

I suspect I would cut straight into the quality fabric, mess it all up and wish I hadn't 
Or I would take apart the cover on it now to use as a pattern, mess it all up and wish I hadn't.
So I reckon a practise run would be the way to go 

[Missie]

Id go for a mock-up due to the curves