This is not my model to begin with, you can find it here.
https://civitai.com/models/560154/straddling-handjob

Base model > Pony, Illustrious (may be compatible with other models, but not all)
Usage tips > Strength 1 (feel free to adjust the strength value)

Tag : straddling, handjob
Additional tags : girl on top, 1boy, 1girl, sex,

Recommended quality tags : score_9, score_8_up, score_7_up, score_6_up. Optional : source_anime

Recommended negative tags : score_4, score_5. Optional : 3d, lips