I've listened to the recording. It's understandable, although it's difficult to know if I would have completely understood it if you hadn't already told us what you were saying.
Four things:
1) Be really careful with the word "sheet". If you don't lengthen the "ee" enough, it can sound like the rude word "shit".
2) I'm not sure if you meant to contract "you are", into "you're" but the recording sounds like the contraction. However, you wrote "you are". Make sure that your recordings exactly match the transcription.
4) The "t" in "sheet", the "t" in "writing" and the "tt" in "letter" sound like "d", "d" and "dd". I don't know if you're doing this on purpose. It's a feature of some dialects but it's not necessary to emulate it. To clarify, it sounds like you're saying "The sheed of paper you're riding the ledder on".