I cut a name on my arm......?

Ok so i'll be 13 in 4 months. N i kinda acudently sumwat carved a name on my arm. Its the name of this 13 yr old guy i rly rly like at school. Me n him r sum-wat friends i guess. So one day i was in my room, i was thinking bout him. N then for some reason i got rly sad n picked up a thumb-tack n carved his name on my arm. I nvr did that b4 i jus usally cut deep scraches on my arm i nvr wrote a name b4. N after i did that it hurt. (ive been cutting ever since i was 11). N im scared my mom will find out. My sister knos but shes not gona tell my mom. Im scared she mite see it. Its not rly on the lowest part of my arm. Its lyk by my elbow. I lil below my elbow. But my teacher saw all the cuts on my arm (a long time ago) n called my mom so she knos i cut, n i got slapped in the face by my mom cuz i did that. But she thought i stopped cutting so... I also cut alot on my wrist n i lyk have this big brasalet to cova it. But is there anything i can do to cover the cuts up cuz my mom makes me take off my brasalet at night??????