Your "Even to Julia" idea would work in the right context, e.g. even Julia, who hasn't worn a dress since 2012 when she was invited to be a bridesmaid at her cousin's wedding, found the prom dress to be the most important part of the whole affair.
There is an implicit comparison when you use "even".
You could gain more naturalness and confidence in your use of "even" by looking at example sentences in dictionaries.
Worry is a verb and a noun, and worried is both the preterite (simple past) and past participle of that verb, and an adjective (as with many past participles).
When used as a verb, worry can take a normal object or a prepositional phrase.
I don't want to worry you.
Here you is an object, and the whole things means that you don't want to cause the person to worry.
I worry about you.
Here, about is a preposition indicating a topic. Just like you can "talk about going to the zoo", you can "worry about going to the zoo". It shows what the worry concerns.
You can use all the normal tenses with the verb worry, but you can also use worried as an adjective. If someone is worried, they are experiencing worry in the noun sense - an emotional or mental state associated with worrying. Both the noun and adjective sense can take a prepositional about, just like the verb.
If someone is worried about something, that is largely equivalent to saying that they worry about that thing.
All of your examples are correct and appropriate.
There are some other senses of worry, but they are sufficiently rarely used that I wouldn't worry about them for now.
Best Answer
All are grammatically correct, but can have slightly different meanings.
This could mean that in addition to other things that you are allowed to do, you are allowed to see your son. Depending on context, it could mean that in addition to others being allowed, you are too. E.g. "Your son's wife is allowed to see him. You also are allowed to see him."
Pretty much the same as the previous. We would be less likely to use this form to say #2 above, i.e. that you are allowed along with others who are allowed. This would more likely mean #1, in addition to other things, you are also allowed, etc.
In addition to other things, you are allowed to see your son. This differs from the first two in that it can be used when the other things are not permissions, while the first two would generally be used only to discuss several different permissions. That is, for example:
Versus:
Finally,
This one is most different. It would normally be used if there are specifically others that you are allowed to see, and your son is one of those. Like, "You are allowed to see your daughter. You are allowed to see your son also." You wouldn't use this form with other permissions or with other things that are not permissions.
But note that if you put a comma between "son" and "also", then it becomes the same as "Also, you are ..."