Regarding the radius of entry and exit partial loops, there is no such criteria as "crispness". Pulling to a vertical line for instance there is no such thing as a "crisp" pull when it comes to judging. That radius can be as large or small as you like. What matters is that the initial radius must be matched in other pulls/pulls or exits on most figures. There are exceptions, but in general the radius of the entry and exit must be the same (both large or both small).

Also, in Aresti do not confuse very sharp corners as meaning tight radius. That is a simple way of depicting the change in attitude and means a smaller than 1/2 loop line segment (1/4 loop, 1/8, etc.). The radius should still be smooth and at whatever size you desire..