Alright, I read through the Codex and the first scene. This still needs a lot of work, mostly in the grammar/sentence-structure department. I'm going to leave this for a bit and let you work back through the doc; use the notes I left to correct further issues.
I have this issue with a *lot* of new writers, so don't feel bad about it. There are some clauses that can't stand on their own as sentences; "Trying to wrap your hands around your dick" for example isn't a sentence. It's a clause you could attach to another to form a sentence, such as "Trying to wrap your hands around your dick, you wriggle in the monster's clutches." The second clause provides the primary noun (you) and verb (wriggle); the first clause becomes a modifier of the second, primary clause -- which could stand alone as a sentence, if an uninteresting one.
I have this issue with a *lot* of new writers, so don't feel bad about it. There are some clauses that can't stand on their own as sentences; "Trying to wrap your hands around your dick" for example isn't a sentence. It's a clause you could attach to another to form a sentence, such as "Trying to wrap your hands around your dick, you wriggle in the monster's clutches." The second clause provides the primary noun (you) and verb (wriggle); the first clause becomes a modifier of the second, primary clause -- which could stand alone as a sentence, if an uninteresting one.