Im not sure, but I do not think there is unless people do not have proper grammar...
myself
i give myself presents on my birthday!!
if the word after it begins in a vowel
No, the word myself is not a conjunction, it is a pronoun.
the anser is that you can use it in a sentence if you use it right. like... i like to play games by myself.
I'll be keeping thatlittle secret to MYSELF!!
The subordinate clause in your sentence begins with the word before.
I painted myself in a corner.
my twin is like a duplicate of myself
i treat myself with an i phone
it depends what word it is it could be any part of speech depending on the sentence
You can use the word "myself" in a sentence when you are referring back to yourself for emphasis or clarification. For example, "I made the cake myself" emphasizes that you made it personally. Another instance is when it is used reflexively, such as "I hurt myself when I fell."