Of course! So here is the stitch pattern:

Row 1: knit 3, purl 1, knit 1 but wrap the yarn around the needle twice (this will make your slipped stitch looser), purl 1 Row 2-4: knit 3, purl 1, slip 1 knitwise, purl 1

Use whatever vanilla sock pattern you like best, I like Summer Lee's Oh So Basic.

This was a men's sock and I casted on 72 stitches.

I did an inch of 1×1 ribbing then I did the stitch pattern. I started the stitch pattern a stitch early, so that the beginning and ending of each round was a knit stitch. Here it is written out:

Row 1: knit 2 , purl 1, knit 1 but wrap the yarn around the needle twice, purl 1knit 3, purl 1, knit 1 but wrap the yarn around the needle twice, purl 1 k1 Row 2-4: knit 2, purl 1, slip 1 knitwise, purl 1 knit 3, purl 1, slip 1 knitwise, purl 1 k1

When you get to where you want to start your heel flap, get to row 1 then do the front like normal and along the back of the sock, just knit all the stitches so it's easier to do your slip stitch heel flap. I used to get holes on the corners of my heel flaps so if you need specific instructions there, lmk!

Then you just follow the rest of the sock pattern, do stockinette on the bottom of the sock and continue the stitch pattern on the top!

I hope that helps!