How to make an atractive front for my gigs

[sheepisch]

Hello,

My gigs are all about illustrating and drawing.
The gig that has been ordered the most, has a drawing as front that wasn’t draw especially for Fiverr:

This is the gig

There hasn’t been an order for quite a while but I think that that’s another story…

The other gigs revolve around vector illustrations:

This is the pattern gig link

The vector illustration gig

So I was wondering wether I have unprofessional fronts for my gigs?
Does it seem like I don’t have enough skill?

Thank you for your time!