how to tame a single gerbil?

[Ashs owner]

hello I have a gerbil and Im having a hard time training him. he's kinda tame he let's me pet him and he sits on my hand if their is small
seeds on my hand but if I lift my hand up he jumps up and runs away. my parents arent willing to buy items for a split cage so i cant  do anything about that but Ash dies ( ash is my gerbil's name) so can anyone give some tips on taming 

[rhianna]

Here's a taming guide that I wrote up: gerbilgerbil.tumblr.com/basic%20taming

[Ashs owner]

thank you