According to my latest cipher theory, this is a general estimate of what the encipherment process could be:

1. (Optional) Prepare your plaintext by removing some letters. Helps to save time.
2. (Optional) Split into blocks of equal length. Helps to reduce errors.
3. Convert each letter into a number with simple substitution.
4. Do some mathemagics to the numbers with Pascal’s Triangle (exact details are trade secret). You now have Voynichese! If you split the plaintext into blocks, each one now corresponds to a line of ciphertext. But some may have ended up with wildly different lengths, so…
5. (Optional) Pad out lines with filler at the beginning or end to make them equal length. Helps to make the result look nicer and harder to decipher.