Step 4: Apply Joint Tape and Compound Apply joint tape: Cover the seams around ... you can use drywall repair clips or install a piece of scrap wood (like a furring strip or plywood strips ...

You can then apply joint compound to the seams and sand ... t have to make the curved drywall strip if you use a kit like theSimpleARCH — you only have to add the wood supports, drywall sides ...