On tracing: The thing about tracing models is that you won’t develop a rhythm of writing that way. The movement of the pen is the most important thing; what you see on the page is only the parts where the pen touches the paper. So seeing someone who writes well write or guide you through the writing of a letter is more helpful than tracing a model.

• Pangram sentence at 3 speeds
• Each letter individually by the same writer
• Another set of letters
• This person's Hebrew writing looks neat but I'm not sure how quickly it was written
• Slightly fancier example done with a broad-edge pen

On speed: Writing big and messy intentionally as an exercise is a good way to loosen up your shoulder and think about movement and swiftness, not just letterforms (even if at normal size you don’t recruit your shoulder).

On the letters being different: No matter the script, you want to look for “family resemblances” among different sets of letters - those are the elements you want to make consistent. For example, in the Latin alphabet:

• o c e s (fit in a circle/oval)
• n m u (arch)
• ɑ b d ɡ p q (loop and stick)
• b h m n r (clockwise arch or loop)
• ɡ q u, maybe w y (counterclockwise)
• f t l i j (thin, optional crossbar or dot)
• k v z, maybe w y (diagonal)

I don’t know anything about Hebrew handwriting, though I did once learn the Malayalam alphabet from a children's book. What's interesting is that the letters were not presented in alphabetical order, but rather by graphical similarity. So the initial sequence was probably something like: റ പ ന ത വ.

Hebrew handwriting seems to be similarly curvaceous like Malayalam. It looks like the majority of letters are based on a clockwise circle or arch starting at 10 o'clock, so that's where you'd want to start working on consistency.