Twitter-icon.com has a great selection of twitter icons and buttons.
Site: osc.lk (The Overseas School of Colombo - Oldest internationally accredited educational institution in Sri Lanka)
International school providing education for students from pre-school to high-school; only IB World School in Sri Lanka offering the International Baccalaureate Exam or IB Diploma; curriculum and academic programs are from the British, American and Australian systems.
Do you have a twitter account? If so it's important
to get as many people as possible to follow you.
Great follow me icon captures attention of the visitors
and brings more followers to your twitter account.
Choose great twitter icon for you website!