show them you are a good guildmaster to look up to. Keep motivations at hand. Talk to them as they are an important people inside your circle. Respond to thier needs as you can, but dont pamper 'em. and set rules, especially levelling up the guild which takes the whole guild effort and not the GuildMaster alone. Achieve the GP required, and collect/require your guildies to donate whatever amount or perhaps an specified sum of gold for each, which makes affordable to them.
Levelling a guild especially to level 3 with players only at 30s or 40s takes time, but like what they say: PATIENCE is a VIRTUE. at least the extra GPs can be carried out to the next level. all youhave to do is keep the guildies intact and committed.
Just an opinion to ponder. GOODLUCK
