Steps in QIIME2 analysis

Can anyone confirm if my pipeline mentioned below is right for qiime2 analysis

  1. so we first import the data in form of manifest file

2)I now will trucate my forward and reverse reads from where the quality of bases fall below Q20 or Q30

  1. This generates the following output

  2. Now Can I directly build a taxonomy table ,calculate alpha and beta diversity from the above three output?

Thank you.

Basically yes, looks like appropriate estimation of required steps.
Please check this tutorial to get some examples and standard workflow.