Fast forward to my junior and senior years in high school, that very same teacher became my study hall teacher.

To fix comma splices you can place a conjunction after the comma, replace the comma with a semicolon, form two separate sentences by replacing the comma with a period or rearrange the sentence.

corrected example:
Fast forward to my junior and senior years in high school; that very same teacher became my study hall teacher.

https://www.mscc.edu/writingcenter/docs/resources-run-on-sentences-comma-splices.pdf

apartment." 

The comma after 2017 is not enough to connect the two independent clauses correctly on it's own. Therefore, I could add a coordinating conjunction to the sentence.

My correction: "It was 6:00a.m. on April 29th, 2017, and I was sleeping down in Milwaukee at my sister's apartment." 

4. Family relationships (when used as proper names)
5. The days of the week, the months of the year, and holidays (but not the seasons used generally)
6. The names of countries, nationalities, and specific languages

collages, he told me that UWM would be a good fit for me and that if I was interested in

going he could get me an onsite interview with one of the admissions director.

To correct this error I can use a cunjunction, a semicolon.

Correction: In the beginning of October I started meeting with my counselor to pick out some

collages AND he told me that UWM would be a good fit for me, and that if I was interested in

going he could get me an onsite interview with one of the admissions director.
https://owl.english.purdue.edu/owl/resource/598/02/

correction: Tiffany loved music. She would always listen to music on hot 102fm radio. 

 online info: The comma splice is one of the most frequent mistakes made when using a comma. The comma splice occurs when a comma is used to connect two independent clauses. 

Definition of Comma Splice 

A comma splice is known as a grammatical error, or a misuse of commas. It occurs in a sentence when an author inserts a comma incorrectly between two main (independent) clauses to separate them. Two main clauses can be joined with a comma or a conjunction. For instance, in the example “The air was soggy, the season was exhausted” (Hub Fans Bid The Kid Adieu, by John Updike), the sentence can be corrected by using either a period or the conjunction “and” to separate the two independent clauses. 

b. Show an error or two that you made.
“I never actually talked to her, so I don’t know her name. But, I did watch her from afar.
She was just so intriguing! For instance, she beat all of the boys at arm wrestling at my school. It
was a thing that only the guys did during lunch time, but somehow she got involved in it and she
beat them all! Even the guys that you can clearly see have muscles, she beat them too! Which
was very impressive because she didn’t look like she had any muscles!”

c. Explain the rule about the error and how to correct it.
Exclamation points are used at the end of a sentence to express excitement. It is even made to add emphasis to a sentence. To correct the overuse of exclamation points, you should see if you have already used one. If you have already used one, you do not need another one. “You don’t need to have exclamation points all throughout your content to convince people to be excited. Punctuation isn’t really going to impact them. However, when you write exciting content, people will read” (McCoy, “Exclamation Point (Exclamation Mark)–How to Use It Properly”).

d. Show the correction.
“I never actually talked to her, so I don’t know her name. But, I did watch her from afar.
She was just so intriguing! For instance, she beat all of the boys at arm wrestling at my school. It
was a thing that only the guys did during lunch time, but somehow she got involved in it and she
surprisingly beat them all. Even the guys that you can clearly see have muscles, she beat them too. Which was very impressive because she didn’t look like she had any muscles.”

https://www.grammarly.com/blog/how-to-use-an-exclamation-point-properly-how-not-to-use-it/