You need to give your planting zone and closest major city if you want specific plant suggestions.

It would also be helpful to have pictures of the entire front. Ideally, take shots standing in one spot, turning in a full 360 degree arc.

It sounds like you already have a lot going on in a small space. Have you spaced your plants with their final mature size in mind? It will initially look sparse but will save you the trouble of having to move and/or frequently trim plants to restrict their size.

I speculate that you are trying to hide the porch again, but instead of with Junipers, some other shrub. With so much variety, it's going to look busy.

As pointed out, if you're landscaping you should show the whole front of the house because you'd want to balance whatever is happening at the right side of the house.

Good suggestions--we are in Zone 5a and our nearest major city is Denver. Here are some more shots of the front (sorry for the garbage cans). The bare ground on the right is also where junipers were.

What is the deciduous tree right of the driveway? If it is desirable and you want to keep it, you'll probably need to remove some limbs so it doesn't obstruct the drive. Plants or groundcover under that tree could be nice once you remove some of those lower branches.

If it was me, I'd remove the evergreen trees near your front door. They block the entrance to the house and are too big to be that close.

The sidewalk seems odd somehow. I'd use the removal of the trees by the door as an opportunity to create a more pleasing walkway to the door.

I'd keep the large tree to the left of the house but you may need to remove some of the limbs - particularly those close to your roof (I need to do this with one of my trees this fall). You could probably move some of the extra plants you currently have in front of the house to the bed anchoring that tree.

How far does the lot go out on each side? That will impact the design as well.

That looks much better with the lower limbs off of the evergreen trees in front of the front door. I bet it would look even better with them completely gone (they seem too large to me for that space). With those trees gone you would be able to see all 3 windows on the upper floor, which would help balance out the appearance of the front of the house.

I would also suggest reflecting the splash of color left of the front door into the small bed on the right. It would help draw visitors toward the door.

I agree that there are already a lot of different plants. I'll also admit that I'm guilty of that with my own home. If you are going for curb appeal, larger clumps of fewer plants often gives a bigger visual impact.

I don't know what groundcover would work well in Denver. Could a single variety of Hosta and/or a repeat blooming daylilly fill the space instead?

Vinca works well for a front range ground cover. There are other ground covers that could be used as well. I would paint your garage door the same color as the siding. As is, it is the real attention-getting when looking at the front of your house.

These are all great suggestions and I really like the rendering, Yardvaark. Seeing that makes me sure I want to have the groundcover repeating on both sides, like you drew (if not vinca then perhaps snow on the mountain or lamium?). I think I need to incorporate the dogwoods and boxwoods into the design because I don't think that I can return them, and they will give some winter interest. I do like the splash of color near the front door, though I'm not sure what I can use in the shade to achieve that. Perhaps I could put a grouping of corral bells there, or I could put a little lime hydrangea there to at least get some pretty white flowers. Thoughts?

"I do like the splash of color near the front door, though I'm not sure what I can use in the shade to achieve that." Shade tolerant annuals ... Coleus. Impatiens, etc.

Try to exchange the erroneous plants for groundcover. Otherwise, maybe you have some place in parts of the yard other than the front. Where in the above scene could a grouping or hedge of red twig dogwood (fairly sizeable plants that need full sun for twig color) go? Where could boxwood go without diminishing the scene? I can see neither.

Geranium macrorrhizum will do well, be evergreen, and is in stunning bloom now in my zone. Deer, drought, and shade resistant.