Hi I'm 13 and recently got into fashion sketches but I can't seem to draw my Croquis right I have all these wonderful ideas just my drawing skills that's suck so if u could please answer my question would be wonderful

*How to improve my sketches ?
*How to get inspired without totally ripping off the other persons design?
*websites that may help me with different techniques for drawing fashion sketches??


Thank you in advance!!!!