big

This is it's second year alive and it's first year in bonsai soil. I've let the roots grow into the pot below it to gain vigour. Before it was rooted in the soil below, the leaves were quite small.

So today I collected a plant. I think it’s an elm, but not so sure. Can anyone tell me what it is? Still having a hard thing telling it myself. Advices, opinions regarding the plant are accepted. Tell me whatever you think. I put in a fairly light soil to promote root growth(around 60-70%...