world Challenge Costa Rica And Nicuragua Expedition

I'm 14 and from yorkshire, I have spent two years raising £4000 to go on a 4 week expedition. On my trip I will spend time refurbishing, teaching english in a deprived village school in Nicuragua, also doing trekking up la fortuna volcano and travelling the country, it's 19 days til I leave and I need to raise the last hundred. I would like to use any money left over to help the children and families of the village I am helping at. All the help and donations is sincerely appreciated, thank you!