I want to achieve a bumpy feeling in the brushstrokes of oil painting, and the desired brushstroke effect is like waves

I tried to make some by myself, but the results were not very good, so I hope you can give me some advice,enter image description hereThe first picture is the effect I hope to achieve, enter image description hereand the second picture is the effect that I can only achieve so far. I hope to achieve a similar effect to the first picture