Sunnats and aadaab of wudhu

Making wudhu in the shower

Q: I have just recently become baaligh. I have been performing all my salaah and have not missed any. However, I used to make "wudhu" while showering. One day, I realised that sometimes while showering I did not wash my face and make masah (faraaidh of wudhu). I cannot recall how many salaahs I have performed in this manner. Please advise what I should do.

Making wudhu with eyeliner

Q: I did ghusl and wudu and prayed salah. After salah I realized I had some black residue on my eyebrows and a little on my eyelid and eye (residue for all areas mentioned was eyeliner) but this wasn't clearly visable. Even though I washed my face several times also the head area so I assumed everything was washed off. I am now concerned whether my prayer has been invalid.