what is a jpeg format i want to get my artwork on but i cant plz tell me.and your artwork rocks

the cat form of kat is great...even tho u kinda stole my name...^^...the human form is good too but u need to work on making the head wider in profile cuz if u feel behind ur head u can feel there is way more back there than u are drawing...other than that its awesomness^^... seika