Hope you don't mind, TinGull but used your chat to show something. Just a couple of things to look for.
One note on stopping volume. Tom Williams, the father of
VSA, would enter on the close of that bar. TG, however would not place a sign of strength until the next bar closes and is an up close. (2 bar pattern).
Getting in at the very bottom or top is not the most important thing. Here the best entry is after the test. Why? Because we have seen the strength come in on the stopping volume. Then we see a No Supply indication followed by a test for supply.
The Smart Money wants to make sure that there are no sellers out there to impede the mark up phase. That is why they test the market. Of course, the mark aggressive you are as a trader the earlier you would enter. But you should be looking for the bar after the volume spike (stopping volume) to confirm before entry.