Purpose: The aim of the present study was to determine whether improving motor performance predicts self-perception in adults. Methods: A total of 55 participants (M = 20 ± 2 years old) were randomly assigned to one of three groups: blocked practice, random practice, and the control group. To evaluate self-perception, The Self-Perception Profile for Adults was used in the sports skills and physical appearance domains. The Test of Fundamental Motor Skills in Adults was used to evaluate motor performance in jumping and throwing skills. A seven-session motor intervention was applied, using blocked and random practice. Results: The results showed that the groups that performed blocked or random practice significantly improved their jump and throw performances and were superior to the control group in the post-test. Multiple regression analysis indicated that the improvement in motor performance, sex or type of practice performed did not significantly predict a change in perceived competence in sports skills (R2 = .038; p = .739), nor in self-perception of physical appearance (R2 = .008; p = .366). Conclusion: In conclusion, the blocked practice and random practice improved the performance in the motor skill, but this improvement does not predict changes in the self-perception of this sample.