Make sure the spray bottle is clean and free of other cleaners or chemicals before you use it.
Vinegar is often used as a cleaning solution, so the area you spray may end up cleaner than the rest of your carpet.
It’s important to use a white towel so that you don’t bleed any color onto your carpet.
If a spoon doesn’t give you the results you hope for, try combing the carpet with the tines of a fork. Also try a brush with stiff but non-metal bristles to even the carpet out when the dent is gone. A boar’s hair brush works well.
Use a soft brush to even out the carpet once the fibers are fluffed back up.
Do not put the iron directly onto the carpet or the towel as you might damage the carpet fibers.
For more stubborn carpet fibers, scrap the carpet with the edge of a spoon or comb it with a fork to fluff it more. Brush the carpet afterward so it has an even look.