Can anyone please tell me what do i have to do to, how do you say it,
up my rank as a member? (<- is that how you say it)

Thanks in advance   

Hi Nami,

Jessadia has this answer in the FAQ:

Q. How can I advance my membership status? (Newbie=>Hero Member)
A. You can increase your membership status by the number of posts you have. Here's a list of how many posts qualifies you for each rank:
Newbie: 0-19 (1 yellow boxes below rank title)
Jr Member: 20-49 (2 yellow boxes)
Full Member: 50-99 (3 yellow boxes)
Sr Member: 100-199 (4 yellow boxes)
Hero Member: 200+ (5 yellow boxes)
*Moderators have 5 green boxes and Admin has 5 red boxes. The more active you are on the site, the higher your rank gets.

Hope this helps.