This is the final product of your efforts - the weave rope will appear between the two crossed vertical ropes. This is sometimes called a "twist" or "diamond". Unless the drum is very, very loose, I don't recommend doing more than 6 diamonds per tightening session. Let the drum sit for a day or two if you still don't find it tight enough, then add more. This way, the skin can stretch more gradually which gives it less stress than trying to get it tight all at once.