First Macro's...love some advice..

had fun trying out some macro's. harder than i thought but.
getting the whole bug sharp was a problem, like focusing near his head, would make his back blurry. any macro tips would be great!
also, anyone know what the hell it is?
stats:
D70 with Tamron 70-300
f11
1/500
iso 400
built in flash
300mm focal
handheld
[img]<a href="http://www.flickr.com/photos/pehpsi/300812496/" title="Photo Sharing"><img src="http://static.flickr.com/100/300812496_12a66b7158_o.jpg" width="800" height="516" alt="_DSC0086 - Version 2.jpg" /></a>
[/img]
[img]<a href="http://www.flickr.com/photos/pehpsi/300812616/" title="Photo Sharing"><img src="http://static.flickr.com/108/300812616_23f1e897b6_o.jpg" width="800" height="465" alt="_DSC0090 - Version 2.jpg" /></a>
[/img]
[img]<a%20href="http://www.flickr.com/photos/pehpsi/300812750/"%20title="Photo%20Sharing"><img%20src="http://static.flickr.com/113/300812750_97f7622fdf_o.jpg"%20width="528"%20height="800"%20alt="_DSC0102%20-%20Version%202.jpg"%20/></a>[/img]
cheers.
getting the whole bug sharp was a problem, like focusing near his head, would make his back blurry. any macro tips would be great!
also, anyone know what the hell it is?
stats:
D70 with Tamron 70-300
f11
1/500
iso 400
built in flash
300mm focal
handheld
[img]<a href="http://www.flickr.com/photos/pehpsi/300812496/" title="Photo Sharing"><img src="http://static.flickr.com/100/300812496_12a66b7158_o.jpg" width="800" height="516" alt="_DSC0086 - Version 2.jpg" /></a>
[/img]
[img]<a href="http://www.flickr.com/photos/pehpsi/300812616/" title="Photo Sharing"><img src="http://static.flickr.com/108/300812616_23f1e897b6_o.jpg" width="800" height="465" alt="_DSC0090 - Version 2.jpg" /></a>
[/img]
[img]<a%20href="http://www.flickr.com/photos/pehpsi/300812750/"%20title="Photo%20Sharing"><img%20src="http://static.flickr.com/113/300812750_97f7622fdf_o.jpg"%20width="528"%20height="800"%20alt="_DSC0102%20-%20Version%202.jpg"%20/></a>[/img]
cheers.