I understand that you are new to magic (or at least new to the forums). Your handling in the second video was better. I wouldn't insert the card from the back the second time. Keep changing things around so it doesn't look like you are doing exactly the same thing each time.
As for what you are saying when you do the effect, it is awful.
1. Nobody except a magician knows what it means to control a card.
2. You imply there is a method. This makes the spectator try and look to see what you are doing and try to figure it out. The effect becomes a puzzle rather than magic. You also have the card signed to deal with "skeptics." I immediately think that I should start being more skeptical.
3. I understand if you are trying to use the "method" as a guise (like presentations of the invisible palm or other effects where the explanation of the method provides mental misdirection) but don't explain what the method is. How does merely riffling a card make it come to the top?
4. Several times you refer to what you are doing is "simple." This makes the spectator feel stupid because you are tricking them with something simple.
5. You also ask the spectator if they saw what you did. Again, you are challenging them to figure out how you are tricking them. If you encounter someone who knows anything about magic, they will start yelling out how you did things merely because you have issued a challenge.
6. Finally, you fail to answer the most important question regarding magic presentation... "Why should I care?" Why should I care if the card comes to the top of the deck? Why should I care if you can do it several different ways? If people don't care, they won't be astonished. Your patter needs to be more than "say-do-see" patter (where you say what your are going to do, do it and then tell the audience to see what happened). Your patter needs to make the effect more interesting to the audience.
7. This is a pet peeve, but what the heck does snapping have to do with a card rising to the top?
Now, everything I just said could apply to 99% of the ACRs that I've seen performed. Coming up with good patter that doesn't just narrate what you are doing and doesn't give a long and ridiculous story of how certain cards come to the top of the deck because they are ambitious isn't easy.
The best ACR's I've ever seen performed is Caleb Wiles iDeck (which is in his High Spots notes). The (tongue in cheek) premise is that he has an "computerized" deck of cards. The card not only rises to the top, but does other things that a computerized deck would do (copying, cutting & pasting, using Google, etc.).
One final tip. Rather than riffling the cards, dribble the cards ending up with the chosen card or double in your hand. Explain it as you are lifting their card through the others to the top of the deck. You also could riffle through all the cards and have the spectator turn over the top card (provided it isn't a double). This really sets up the final phase.
Let me know if you want any help coming up with some patter for your ACR.