Hi im new 2 this site..im doing a course with essential nails and am now on the last part of the course "working the whole hand"...do the nails have to be all the same size..? has any1 done this course?...if any1 has any advice it would b much appreciated as i feel like iv been doin this forever...i have 3 children and trying 2 work around them is hard work! i jus want 2 get it right 1st time and send it off so please if u have any tips pls pls let me no thank u