OK you can do it that way for the main part but no idea how you would do it for the top.
Your image seems to have way too many holes, compared to ref.

Here is how I would do it from were I just left off

1) Create sphere or cylinder with 8 sides
2a) snap it to place, copy it the length of the main body
2b) snap it the points of the top and angle them so they match the tip
3) With this row group it and snap the pivot point to the centre (insert, then hold v)
4) Shift D (Duplicate) the group and rotate by 30 (this number is for my model do it so it matches yours if you want/need more or less holes). Repeat till all the way around.

*** only did apart of the model as going out as you can get the idea from that ****

5) Select all the objects but the base, combine them and then delete history.
6) Boolean the two object with difference.
7) Clean up the mesh with split poly tool and then delete the faces where you want the holes.
8) Excurude the faces giving it thickness
9) Bevel or add edge loops so the holes keep there shape if smoothing