When our female Shayvele was between about 4 and 8 months old she tried to be as terrifying as possible when we'd go to take her out--puff out her beard, gape and generally be as scary as 150 g of lizard could be. We kept at it, as slowly and calmly as possible, distracting her with one hand and picking her up with the other. At about 9 months she began to settle down and now is generally quite happy to be held and cuddled. I wouldn't trust her on my shoulder without a harness, since she likes to jump and if she wound up going splat on the floor she could hurt herself. So don't despair and patiently keep trying. Of course, every lizard is different--we have two baby southern angle-headed dragons and the (probable) female is pretty docile but the (probable) little male tries the "I'm a velociraptor and I'm going to kill you" routine whenever I try to pick him up, which is even funnier in a lizard that's 13 cm from nose to tail-tip.
