There are three signed vases from Smikros. John Beazley called him an imitator of Euphronios. It is possible that Smikros cooperated in some late and not completely successful vases, which are assigned to Euphronios. On one psykter in the Hermitage (St Petersburg), Euphronios has a female figure with the inscription Smikra provided, which could be understood to be a reference to his pupil. Another amphora seems to belong to Smikros, which suggests possibly a co-operation between both artists. Smikros might also have decorated another stamnos and two pelikai assigned to him.
Beazley called Smikros a bad draughtsman. This is, however, only in comparison with the other members of the Pioneer Group. At that time, red figure vase painting was still in its infancy and the pioneers were still vigorously experimenting. A lack of ingenuity with the picture composition can be seen. His designs are precise, yet become inaccurate in his representation of such details as ears, fingers and dress.