Error #1-Some form of punctuation is needed to correct this run-on sentence. A period or a semicolon would work. 

Error #2-An end mark is needed. 

Error #3-It's possible. 

Error #4-A comma is needed following this subordinate clause. 

Error #5-Commas should set these words apart. 

Error #6-A comma should follow this introductory subordinate clause.