If it's not completely curdled then add some more vinegar to this.
Wait till paneer separates from the whey (greenish or whitish liquid)
Turn off gas. Strain it with help of a muslin cloth.
Run some fresh water on it to get rid of that taste of curdling agent.
Carefully squeeze it to get rid of excess liquid from this.
Place it in a container along with tied muslin cloth (as shown in picture).
Place a heavy object on top of it to set properly.
After 15 minutes, remove this from cloth.
Paneer is set now. Cut it into desired pieces.
Homemade paneer is ready.
Notes
Use full cream milk for best result.Don't boil after paneer separates from whey. Else they will be hard and chewy.Wash it once after straining from hot whey.Last but not the least be careful as the paneer is hot. So straining and squeezing needs to be done carefully.