Oh, and I won’t be at swimming this afternoon. Sorry!

It seems you start the action of your story immediately - a bold move that can instantly hook the reader in. Even though there’s a slight lack of description of personalities and setting, it’s not a big problem because of the statement in the letter. The reader knows exactly where the plot should be going, and they will be gleaming for the plot to continue. I hope you intended this to be a fast-paced story, because it certainly feels like one.

Now, after this hasty episode, you should try cooling down the tempo by introducing a new character through conversation of some sort with Mr. Stickman. In doing so, try to mold both characters with personality traits of your choice, but make sure you move the plot along as well, even if it’s just a tad (for example, you may have the new character give out important information to the plot). After Episode 1, it would be boring to just hear two people talk about how nice a day it is outside. It’s kind of like a car: you just jammed the acceleration pedal, so don’t press the brakes immediately! There’s no time to linger around with filler episodes now, you started something, so now you have to finish it!

So, in summary, I would like your next episode to introduce a new character, and develop both personalities, while moving the plot along at the same time. Good luck writing the next episode!