The present participle is always verb + ing.
swimming, sewing, looking, running etc
I/you/we/they have sewn. He/she/it has sewn.
Yes, "sewn" is the correct past participle of "sew." For example: "I have sewn a new dress."
The past tense of "sew" is "sewed" and the past participle is "sewn" or "sewed."
Getting is the present participle of get.
The present participle is doing.
Being is the present participle. The past participle is been.
Presenting is the present participle of present.
Presenting is the present participle of present.
The present participle is choosing.
The present participle is walking.
The present participle is cleaning.
The present participle is leading.