Wudhu

Q: What's the correct manner of making masah of the head during wudhu?

Q: I got some dirty sexual thoughts but changed my mind as fast as I could and I kept reminding my self not to think of the thoughts later like 15-20 min or so I went to the washroom and when I was washing I noticed discharge it wasn't a lot but it was a bit more then usual so am I napaak? Also what's the ruling in this type of discharge from those thoughts when is ghusl needed?

Q: I know that anything that stops water from entering your skin is haraam (nail polish, wax, etc). But if I only do white nail tips, or any colour nail polish on the tips of my nails which isn't touching the skin. Is this ok!

Q: Does falling asleep whilst sitting cross-legged break ones wudhu?

Q: Please advise if a woman is in wudhu. Will her wudhu break if her head is uncovered and her hair showing/visible to a non mehram?

Q: If we perform Salaah behind an Imam who did not make masah of the neck and did not wash his feet. He only made masah on his ordinary cotton socks.  Will the Salaah of the Imaam be valid and will the Salaah of the muqtadis be valid?

Q: Is the eye mucus permeable when it is soft? It looks impermeable when it is hard.

Q: What is the ruling regarding the discharge of a woman.

1) When will her wudhu break?

2) Will she have to make qadha of her previous salaahs if she did not make wudhu when she discharged?

Q: I prayed Fajr and was clearing up my room and about 40 minutes later I saw something on the tip of my thumb's nail and some bit inside. So I put it under the tap to test it. The bit inside was gone, but there was still some blackish mark on the tip of my thumb's nail, but not on the skin - I believe. So should I make up that prayer or not? Looks likely to be impermeable, but it's on the tip of the nail anyway. Literally the edge.

Q: I would like to know that if you have a plaster on your hand and you remove it to perform wudhu and it bleeds after wudhu is complete, then does this invalidate the wudhu?