Have a nice, low staggered wrestlers stance. Feet about shoulder width apar.
Never move back, move to the sides a lot, side to side in a crescent type of pattern, or pressure into them. keep you head up, and attack the legs a lot, ankle pics are great, single leg and double leg takedowns, just the basics, also arm drags are really good. Just remeber the basics and good body mechanics, and stay mobil. Also, always try to fight for hand control, keep control of their hands and arms, and NEVER give them control of oyur hands, keep your elbos in not flared out. Don't swing your arms out wide either.
Hope this helps, remeber to be aggressive to.