>>2073752A couple of things, as you have done well and the result is solid.
use as few nodes as possible to get a smoother and cleaner look (if that's what you want to go for) and only use the handles that you need (see pic related)
https://imgur.com/a/YWJrGthe first image in this gallery of examples and explanations should cover how to avoid the transparent seams, as was mentioned above
overall, good job, hope to see more of your work
