[Request] Tile Sets for a mod

[Galacticruler]

I am developing a mod that adds currently 5 new terrains:
Lava. (Edged by lava rock)
Surface Oil. (edged by sand)
Lava Rock.
Gravel.
and stone(lighter texture with no attachment to lava.).

I tried to do this myself and the results are...not very good; the textures show heavy seams and do not fit well together at all.

I was wondering if anyone would mind trying to make some vanilla-alike tile-sets for these?