First concert.. What should I play..?

[concerto_love]

Thank you for read this post... I'm Novia, 14 years old, still in grade 3, and will do a concert about 3 months again...

I'm working on Czerny op.139 now, and I really need some advice for this concert:
- This is my first concert, what should I do? I'm really nervous!
- What piece should I play? It must be not too long, pretty easy (still in grade3 !>,<), and not too short too... I really having problem with choosing songs

Thanks for all your help! ^^

(sorry, bad grammar)

[dana_minmin]

Try Solfeggietto by another Bach (Ph.E.Bach) 

[concerto_love]

Thx!!! Thx!!! I'll try it!! ^^