So after 6 months of reading and research generally. Many many hours of practice an opportunity to present "something" to a male friend of mine occured.
It was (as ive been told in many books) the moment the person was eager to see something and had been put off before so hopefully i could enhance the magic by them wanting to see it.
My pad and pen were just laying on the table from previous nights practice and i was asked what they were for. and after a long explaination about using 10% of your brain and that i am trying to enhance that and one part is pen reading.
Anyway to cut a long story short, managed to "read" some numbers and realised things were in my favour so milked for all it was worth, going to 4 figure numbers and pictures with great sucess.
I then did a simple routine with svengali, where i show the person i can memorise a deck and where the card is in that deck even after cuts shuffles, multiple piles etc. Again i was pleased i stopped when it was good and left them wanting more, rather then the temptation to draw it out forever (bit like this post) However explaining the false force of a pile was funny. I told you to pick that one, you just never heard it, but your subconcious did !

Anyway my question.
Myself as a person is sceptical, when i see something in magic i know magic does not exist in terms of magic but that it is created.
When doing these two effects, instinct inside told me that i had to give a reason why it was happening to prevent further questions and to justify the effect rather than allowing the chance of them gussing it was a trick deck. Ive always liked the idea of showing all cards to be the same in svengali, but at the time it felt wrong as it would have shown the deck to be tricked.
So (i know everyone has preferences) what do people think of this as using mentalism "patter" to cover normal magic type effects.
Is this more effective to say i have memorised a deck of cards so i can tell the position of one where ever it is, or just to present the normal look its jumped to the top.
Sorry its a bit long, trying to get the right point across.
Any thoughts appreciated.