@Vipul Vipul - I think the main issue is spacing. I am not sure why you want to overlap the letters so much that descenders sometimes touch the minuscules on the following line. I think this is always going to look busy.
I suggest you look at some letters written Engrosser's script by past masters for ideas on spacing, weight and composition.
I am also not a fan of the overly long ascenders and descenders.
The consistency of weight in your last attempt is better than the previous ones but still needs improvement e.g. the two strokes in the 'n' in limitations on the second last line are different weights. There are other examples too but this was the closest.
Consistency of size is also still an issue. The 'blobs' of the 's' and the 'r' go more than halfway into the 1st ascender space. The 'r' is a bit too narrow and the 's' is way too narrow. We have already covered these in the lessons.
Compare the 'a' and the 'e' in 'careful' - they are different sizes.
BTW - you don't need to write the whole thing in one go. Take a short break every line or even every few words - this will improve your execution.
Some examples of letters:
E. C. Enriquez W. A. Baird 1 W. A. Baird 2 (There are several more available with a bit of searching)