Leave the ends a little longer, arrange them in order by color and press them down on your desk or other surface - in order - with your thumb. Then gently lift them up - still in order - between your thumb and forefinger, and insert into the connector.
Ok people who can correctly crimp an RJ45 connector in under an hour, what's the secret?? Half an hour so far and still not got the right wires into the plug. Fiddly is not the word! 😠